/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:39:42,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:39:42,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:39:42,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:39:42,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:39:42,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:39:42,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:39:42,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:39:42,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:39:42,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:39:42,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:39:42,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:39:42,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:39:42,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:39:42,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:39:42,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:39:43,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:39:43,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:39:43,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:39:43,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:39:43,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:39:43,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:39:43,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:39:43,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:39:43,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:39:43,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:39:43,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:39:43,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:39:43,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:39:43,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:39:43,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:39:43,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:39:43,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:39:43,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:39:43,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:39:43,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:39:43,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:39:43,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:39:43,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:39:43,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:39:43,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:39:43,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:39:43,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:39:43,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:39:43,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:39:43,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:39:43,054 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:39:43,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:39:43,055 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:39:43,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:39:43,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:39:43,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:39:43,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:39:43,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:39:43,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:39:43,056 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:39:43,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:39:43,057 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:39:43,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:39:43,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:39:43,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:39:43,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:39:43,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:39:43,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:43,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:39:43,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:39:43,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:39:43,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:39:43,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:39:43,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:39:43,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:39:43,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:39:43,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:39:43,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:39:43,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:39:43,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:39:43,589 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:39:43,590 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 05:39:43,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0ca3af43/fa2d9b4437af4678866f363dbe6e21c4/FLAG9dc5d383b [2020-09-25 05:39:44,408 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:39:44,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 05:39:44,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0ca3af43/fa2d9b4437af4678866f363dbe6e21c4/FLAG9dc5d383b [2020-09-25 05:39:44,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0ca3af43/fa2d9b4437af4678866f363dbe6e21c4 [2020-09-25 05:39:44,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:39:44,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:39:44,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:44,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:39:44,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:39:44,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:44" (1/1) ... [2020-09-25 05:39:44,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b03ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:44, skipping insertion in model container [2020-09-25 05:39:44,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:44" (1/1) ... [2020-09-25 05:39:44,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:39:44,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:39:45,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:45,446 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:39:45,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:45,821 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:39:45,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:45 WrapperNode [2020-09-25 05:39:45,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:45,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:39:45,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:39:45,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:39:45,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:45" (1/1) ... [2020-09-25 05:39:45,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:45" (1/1) ... [2020-09-25 05:39:45,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:45" (1/1) ... [2020-09-25 05:39:45,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:45" (1/1) ... [2020-09-25 05:39:45,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:45" (1/1) ... [2020-09-25 05:39:46,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:45" (1/1) ... [2020-09-25 05:39:46,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:45" (1/1) ... [2020-09-25 05:39:46,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:39:46,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:39:46,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:39:46,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:39:46,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:46,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:39:46,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:39:46,136 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:39:46,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:39:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:39:46,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:39:46,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:39:46,139 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:39:46,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:39:46,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:39:46,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:48,777 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:48,778 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:48,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:48 BoogieIcfgContainer [2020-09-25 05:39:48,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:48,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:48,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:48,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:48,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:39:44" (1/3) ... [2020-09-25 05:39:48,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f18af98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:48, skipping insertion in model container [2020-09-25 05:39:48,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:45" (2/3) ... [2020-09-25 05:39:48,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f18af98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:48, skipping insertion in model container [2020-09-25 05:39:48,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:48" (3/3) ... [2020-09-25 05:39:48,803 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-25 05:39:48,818 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:48,832 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:48,860 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:48,902 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:48,902 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:48,902 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:48,902 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:48,903 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:48,903 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:48,903 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:48,903 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:48,946 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 05:39:48,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 05:39:48,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:48,959 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] [2020-09-25 05:39:48,960 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:48,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:48,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1378965372, now seen corresponding path program 1 times [2020-09-25 05:39:48,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:48,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932833332] [2020-09-25 05:39:48,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:49,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:49,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:49,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:50,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:50,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 05:39:50,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:39:50,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-09-25 05:39:50,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:50,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:39:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:39:50,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:39:50,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:50,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:50,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:50,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:39:50,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:50,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:39:50,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:50,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:39:50,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:50,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932833332] [2020-09-25 05:39:50,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:50,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:39:50,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573062902] [2020-09-25 05:39:50,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:39:50,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:50,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:39:50,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:39:50,270 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 05:39:54,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:54,143 INFO L93 Difference]: Finished difference Result 1935 states and 2532 transitions. [2020-09-25 05:39:54,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:39:54,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-09-25 05:39:54,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:54,173 INFO L225 Difference]: With dead ends: 1935 [2020-09-25 05:39:54,174 INFO L226 Difference]: Without dead ends: 1050 [2020-09-25 05:39:54,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:54,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-09-25 05:39:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 997. [2020-09-25 05:39:54,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 05:39:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1185 transitions. [2020-09-25 05:39:54,316 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1185 transitions. Word has length 39 [2020-09-25 05:39:54,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:54,317 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1185 transitions. [2020-09-25 05:39:54,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:39:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1185 transitions. [2020-09-25 05:39:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 05:39:54,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:54,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:54,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:54,324 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:54,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:54,325 INFO L82 PathProgramCache]: Analyzing trace with hash 878303855, now seen corresponding path program 1 times [2020-09-25 05:39:54,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:54,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764803465] [2020-09-25 05:39:54,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:54,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:56,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 05:39:56,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:39:56,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1847 [2020-09-25 05:39:56,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:56,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 05:39:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:39:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:56,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:56,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:56,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:39:56,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:56,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:39:56,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:56,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:56,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:56,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:56,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:39:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:56,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:56,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:39:56,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 05:39:56,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:56,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:56,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:39:56,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:56,629 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:56,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764803465] [2020-09-25 05:39:56,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:56,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:56,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492901053] [2020-09-25 05:39:56,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:56,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:56,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:56,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:56,634 INFO L87 Difference]: Start difference. First operand 997 states and 1185 transitions. Second operand 5 states. [2020-09-25 05:40:00,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:00,150 INFO L93 Difference]: Finished difference Result 2020 states and 2477 transitions. [2020-09-25 05:40:00,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:00,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-09-25 05:40:00,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:00,161 INFO L225 Difference]: With dead ends: 2020 [2020-09-25 05:40:00,161 INFO L226 Difference]: Without dead ends: 1286 [2020-09-25 05:40:00,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:00,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2020-09-25 05:40:00,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1243. [2020-09-25 05:40:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2020-09-25 05:40:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1537 transitions. [2020-09-25 05:40:00,232 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1537 transitions. Word has length 121 [2020-09-25 05:40:00,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:00,236 INFO L479 AbstractCegarLoop]: Abstraction has 1243 states and 1537 transitions. [2020-09-25 05:40:00,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:00,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1537 transitions. [2020-09-25 05:40:00,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 05:40:00,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:00,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:40:00,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:40:00,253 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:00,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:00,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1418175241, now seen corresponding path program 1 times [2020-09-25 05:40:00,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:00,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449796507] [2020-09-25 05:40:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:00,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:00,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:00,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:05,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 05:40:05,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:40:05,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:40:05,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:05,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 05:40:05,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:40:05,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:05,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:05,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:40:05,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:05,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:40:05,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:05,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:05,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:05,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:40:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:05,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:05,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:40:05,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 05:40:05,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:05,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 05:40:05,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:05,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449796507] [2020-09-25 05:40:05,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:05,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:05,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694895583] [2020-09-25 05:40:05,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:05,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:05,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:05,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:05,670 INFO L87 Difference]: Start difference. First operand 1243 states and 1537 transitions. Second operand 5 states. [2020-09-25 05:40:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:09,907 INFO L93 Difference]: Finished difference Result 3198 states and 4099 transitions. [2020-09-25 05:40:09,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:09,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-09-25 05:40:09,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:09,922 INFO L225 Difference]: With dead ends: 3198 [2020-09-25 05:40:09,922 INFO L226 Difference]: Without dead ends: 1972 [2020-09-25 05:40:09,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:09,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2020-09-25 05:40:09,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1932. [2020-09-25 05:40:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1932 states. [2020-09-25 05:40:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2434 transitions. [2020-09-25 05:40:10,007 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2434 transitions. Word has length 123 [2020-09-25 05:40:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:10,010 INFO L479 AbstractCegarLoop]: Abstraction has 1932 states and 2434 transitions. [2020-09-25 05:40:10,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2434 transitions. [2020-09-25 05:40:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 05:40:10,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:10,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:40:10,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:40:10,027 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:10,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1201167835, now seen corresponding path program 1 times [2020-09-25 05:40:10,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:10,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178285269] [2020-09-25 05:40:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:10,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:10,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:10,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:10,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:13,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 05:40:13,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:40:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2902 [2020-09-25 05:40:13,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:13,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-09-25 05:40:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:40:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:13,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:13,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:13,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:40:13,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:13,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:40:13,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:13,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:13,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:13,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:13,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:13,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:13,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:40:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:13,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 05:40:13,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:13,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 05:40:13,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:13,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:13,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:40:13,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:13,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178285269] [2020-09-25 05:40:13,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:13,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:13,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450839084] [2020-09-25 05:40:13,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:13,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:13,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:13,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:13,337 INFO L87 Difference]: Start difference. First operand 1932 states and 2434 transitions. Second operand 5 states. [2020-09-25 05:40:17,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:17,632 INFO L93 Difference]: Finished difference Result 3915 states and 5086 transitions. [2020-09-25 05:40:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:17,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 05:40:17,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:17,647 INFO L225 Difference]: With dead ends: 3915 [2020-09-25 05:40:17,648 INFO L226 Difference]: Without dead ends: 2474 [2020-09-25 05:40:17,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:17,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2020-09-25 05:40:17,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2422. [2020-09-25 05:40:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2422 states. [2020-09-25 05:40:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3038 transitions. [2020-09-25 05:40:17,723 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3038 transitions. Word has length 148 [2020-09-25 05:40:17,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:17,723 INFO L479 AbstractCegarLoop]: Abstraction has 2422 states and 3038 transitions. [2020-09-25 05:40:17,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:17,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3038 transitions. [2020-09-25 05:40:17,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 05:40:17,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:17,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:40:17,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:40:17,727 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:17,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:17,727 INFO L82 PathProgramCache]: Analyzing trace with hash -2079553613, now seen corresponding path program 1 times [2020-09-25 05:40:17,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:17,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014271742] [2020-09-25 05:40:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:17,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:17,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:19,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:20,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:20,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 05:40:20,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:20,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2306 [2020-09-25 05:40:20,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:20,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:20,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:20,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-09-25 05:40:20,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:40:20,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:20,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:20,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:20,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:20,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:40:20,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:40:20,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:20,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:20,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:20,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:40:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:20,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:20,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:20,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 05:40:20,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:20,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 05:40:20,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:20,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:40:20,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:40:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:20,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014271742] [2020-09-25 05:40:20,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:20,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:20,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154233674] [2020-09-25 05:40:20,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:20,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:20,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:20,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:20,397 INFO L87 Difference]: Start difference. First operand 2422 states and 3038 transitions. Second operand 5 states. [2020-09-25 05:40:24,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:24,103 INFO L93 Difference]: Finished difference Result 6256 states and 8119 transitions. [2020-09-25 05:40:24,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:24,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-25 05:40:24,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:24,126 INFO L225 Difference]: With dead ends: 6256 [2020-09-25 05:40:24,127 INFO L226 Difference]: Without dead ends: 3851 [2020-09-25 05:40:24,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:24,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2020-09-25 05:40:24,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 3404. [2020-09-25 05:40:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2020-09-25 05:40:24,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 4333 transitions. [2020-09-25 05:40:24,249 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 4333 transitions. Word has length 150 [2020-09-25 05:40:24,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:24,249 INFO L479 AbstractCegarLoop]: Abstraction has 3404 states and 4333 transitions. [2020-09-25 05:40:24,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 4333 transitions. [2020-09-25 05:40:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 05:40:24,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:24,253 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:40:24,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:40:24,253 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:24,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:24,254 INFO L82 PathProgramCache]: Analyzing trace with hash -797814232, now seen corresponding path program 1 times [2020-09-25 05:40:24,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:24,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325267013] [2020-09-25 05:40:24,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:24,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:29,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:29,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 05:40:29,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:40:29,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:40:29,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:29,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-09-25 05:40:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:40:29,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:29,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:29,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:29,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:29,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:40:29,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:40:29,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:29,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:29,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:29,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:40:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:29,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:29,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:29,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 05:40:29,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:29,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 05:40:29,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:29,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:29,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 05:40:29,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:29,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325267013] [2020-09-25 05:40:29,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:29,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:29,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167747719] [2020-09-25 05:40:29,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:29,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:29,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:29,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:29,757 INFO L87 Difference]: Start difference. First operand 3404 states and 4333 transitions. Second operand 5 states.