/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/Problem04_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:10:21,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:10:21,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:10:21,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:10:21,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:10:21,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:10:21,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:10:21,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:10:21,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:10:21,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:10:21,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:10:21,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:10:21,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:10:21,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:10:21,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:10:21,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:10:21,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:10:21,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:10:21,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:10:21,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:10:21,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:10:21,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:10:21,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:10:21,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:10:21,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:10:21,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:10:21,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:10:21,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:10:21,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:10:21,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:10:21,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:10:21,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:10:21,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:10:21,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:10:21,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:10:21,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:10:21,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:10:21,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:10:21,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:10:21,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:10:21,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:10:21,949 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 01:10:21,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:10:21,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:10:21,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:10:21,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:10:21,973 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:10:21,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:10:21,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:10:21,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:10:21,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:10:21,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:10:21,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:10:21,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:10:21,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:10:21,975 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:10:21,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:10:21,976 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:10:21,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:10:21,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:10:21,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:10:21,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:10:21,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:10:21,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:10:21,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:10:21,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:10:21,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:10:21,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:10:21,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:10:21,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:10:21,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:10:21,979 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 01:10:22,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:10:22,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:10:22,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:10:22,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:10:22,287 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:10:22,288 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label52.c [2020-10-14 01:10:22,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1845cb17/84d32a68ec5e49f5b8a3e1523ecddd84/FLAG9cad3f0ff [2020-10-14 01:10:23,099 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:10:23,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label52.c [2020-10-14 01:10:23,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1845cb17/84d32a68ec5e49f5b8a3e1523ecddd84/FLAG9cad3f0ff [2020-10-14 01:10:23,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1845cb17/84d32a68ec5e49f5b8a3e1523ecddd84 [2020-10-14 01:10:23,187 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:10:23,190 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:10:23,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:10:23,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:10:23,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:10:23,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:10:23" (1/1) ... [2020-10-14 01:10:23,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33dfb059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:10:23, skipping insertion in model container [2020-10-14 01:10:23,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:10:23" (1/1) ... [2020-10-14 01:10:23,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:10:23,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:10:25,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:10:25,075 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:10:25,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:10:25,735 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:10:25,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:10:25 WrapperNode [2020-10-14 01:10:25,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:10:25,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:10:25,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:10:25,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:10:25,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:10:25" (1/1) ... [2020-10-14 01:10:25,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:10:25" (1/1) ... [2020-10-14 01:10:25,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:10:25" (1/1) ... [2020-10-14 01:10:25,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:10:25" (1/1) ... [2020-10-14 01:10:25,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:10:25" (1/1) ... [2020-10-14 01:10:25,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:10:25" (1/1) ... [2020-10-14 01:10:25,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:10:25" (1/1) ... [2020-10-14 01:10:25,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:10:25,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:10:25,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:10:25,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:10:25,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:10:25" (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 01:10:26,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:10:26,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:10:26,073 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:10:26,074 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:10:26,074 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:10:26,075 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:10:26,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:10:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:10:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:10:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:10:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:10:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:10:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:10:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:10:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:10:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:10:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:10:30,315 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:10:30,315 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:10:30,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:10:30 BoogieIcfgContainer [2020-10-14 01:10:30,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:10:30,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:10:30,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:10:30,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:10:30,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:10:23" (1/3) ... [2020-10-14 01:10:30,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ce25f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:10:30, skipping insertion in model container [2020-10-14 01:10:30,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:10:25" (2/3) ... [2020-10-14 01:10:30,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ce25f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:10:30, skipping insertion in model container [2020-10-14 01:10:30,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:10:30" (3/3) ... [2020-10-14 01:10:30,339 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label52.c [2020-10-14 01:10:30,351 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:10:30,362 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:10:30,381 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:10:30,415 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:10:30,416 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:10:30,416 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:10:30,416 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:10:30,416 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:10:30,416 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:10:30,417 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:10:30,417 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:10:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 01:10:30,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2020-10-14 01:10:30,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:10:30,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:10:30,502 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:10:30,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:10:30,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1195298627, now seen corresponding path program 1 times [2020-10-14 01:10:30,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:10:30,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118213390] [2020-10-14 01:10:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:10:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:31,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:35,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:36,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:36,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 786 [2020-10-14 01:10:36,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:10:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-14 01:10:36,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:36,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:36,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 01:10:36,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:10:36,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 780 [2020-10-14 01:10:36,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:10:37,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:10:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:37,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:37,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:37,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:10:37,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:10:37,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:37,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:10:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:10:37,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:10:37,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:10:37,735 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 01:10:37,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118213390] [2020-10-14 01:10:37,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:10:37,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 01:10:37,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703815236] [2020-10-14 01:10:37,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:10:37,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:10:37,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:10:37,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:10:37,759 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2020-10-14 01:10:49,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:10:49,940 INFO L93 Difference]: Finished difference Result 3521 states and 6821 transitions. [2020-10-14 01:10:49,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 01:10:49,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 772 [2020-10-14 01:10:49,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:10:49,994 INFO L225 Difference]: With dead ends: 3521 [2020-10-14 01:10:49,994 INFO L226 Difference]: Without dead ends: 2547 [2020-10-14 01:10:50,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:10:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2020-10-14 01:10:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2543. [2020-10-14 01:10:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-10-14 01:10:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 4215 transitions. [2020-10-14 01:10:50,205 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 4215 transitions. Word has length 772 [2020-10-14 01:10:50,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:10:50,209 INFO L479 AbstractCegarLoop]: Abstraction has 2543 states and 4215 transitions. [2020-10-14 01:10:50,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:10:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 4215 transitions. [2020-10-14 01:10:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2020-10-14 01:10:50,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:10:50,238 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:10:50,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:10:50,238 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:10:50,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:10:50,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1086056748, now seen corresponding path program 1 times [2020-10-14 01:10:50,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:10:50,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876841475] [2020-10-14 01:10:50,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:10:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:50,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:51,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:54,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:55,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:55,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 807 [2020-10-14 01:10:55,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:10:55,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 01:10:55,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:55,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:10:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:10:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 801 [2020-10-14 01:10:55,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:10:56,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:10:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:56,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:56,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:56,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:10:56,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:10:56,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 01:10:56,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:56,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:10:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:10:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:10:56,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:10:56,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:10:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:10:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:56,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:10:56,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:10:56,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:10:56,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:10:56,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 01:10:56,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:10:56,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:10:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:10:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:10:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:10:56,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:10:56,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 01:10:56,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876841475] [2020-10-14 01:10:56,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:10:56,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 01:10:56,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615004078] [2020-10-14 01:10:56,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:10:56,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:10:56,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:10:56,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:10:56,976 INFO L87 Difference]: Start difference. First operand 2543 states and 4215 transitions. Second operand 5 states. [2020-10-14 01:11:05,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:11:05,181 INFO L93 Difference]: Finished difference Result 7621 states and 12765 transitions. [2020-10-14 01:11:05,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:11:05,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 791 [2020-10-14 01:11:05,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:11:05,213 INFO L225 Difference]: With dead ends: 7621 [2020-10-14 01:11:05,214 INFO L226 Difference]: Without dead ends: 5084 [2020-10-14 01:11:05,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 01:11:05,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2020-10-14 01:11:05,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 5078. [2020-10-14 01:11:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5078 states. [2020-10-14 01:11:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 7476 transitions. [2020-10-14 01:11:05,352 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 7476 transitions. Word has length 791 [2020-10-14 01:11:05,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:11:05,354 INFO L479 AbstractCegarLoop]: Abstraction has 5078 states and 7476 transitions. [2020-10-14 01:11:05,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:11:05,354 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 7476 transitions. [2020-10-14 01:11:05,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2020-10-14 01:11:05,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:11:05,373 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:05,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:11:05,374 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:11:05,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:11:05,374 INFO L82 PathProgramCache]: Analyzing trace with hash 627087314, now seen corresponding path program 1 times [2020-10-14 01:11:05,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:11:05,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649727961] [2020-10-14 01:11:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:11:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:05,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:05,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:05,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:10,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:10,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 854 [2020-10-14 01:11:10,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:11:10,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 01:11:10,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:10,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:10,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:11:10,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 01:11:10,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 01:11:10,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:11:10,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:11:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:10,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:10,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:11:10,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:10,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:11:10,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:10,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:10,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:11:10,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:10,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:11:10,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:11:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:11:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:10,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:10,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:11:10,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:11:10,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:10,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:11:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:11:10,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:11:10,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:11:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:10,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:10,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:10,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:11:10,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:10,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 01:11:10,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:10,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:11:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:10,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:11:10,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:11:10,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 01:11:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:10,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:10,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:10,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 01:11:10,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:10,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 01:11:10,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:10,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:10,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:11:10,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:11:10,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 01:11:10,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:11:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 01:11:11,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649727961] [2020-10-14 01:11:11,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:11:11,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:11:11,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236062057] [2020-10-14 01:11:11,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:11:11,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:11:11,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:11:11,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:11:11,249 INFO L87 Difference]: Start difference. First operand 5078 states and 7476 transitions. Second operand 7 states. [2020-10-14 01:11:21,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:11:21,995 INFO L93 Difference]: Finished difference Result 12848 states and 19765 transitions. [2020-10-14 01:11:22,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:11:22,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 834 [2020-10-14 01:11:22,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:11:22,046 INFO L225 Difference]: With dead ends: 12848 [2020-10-14 01:11:22,046 INFO L226 Difference]: Without dead ends: 7776 [2020-10-14 01:11:22,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:11:22,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7776 states. [2020-10-14 01:11:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7776 to 7740. [2020-10-14 01:11:22,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7740 states. [2020-10-14 01:11:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7740 states to 7740 states and 10965 transitions. [2020-10-14 01:11:22,288 INFO L78 Accepts]: Start accepts. Automaton has 7740 states and 10965 transitions. Word has length 834 [2020-10-14 01:11:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:11:22,289 INFO L479 AbstractCegarLoop]: Abstraction has 7740 states and 10965 transitions. [2020-10-14 01:11:22,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:11:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7740 states and 10965 transitions. [2020-10-14 01:11:22,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2020-10-14 01:11:22,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:11:22,328 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:22,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:11:22,329 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:11:22,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:11:22,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1056660255, now seen corresponding path program 1 times [2020-10-14 01:11:22,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:11:22,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170242214] [2020-10-14 01:11:22,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:11:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:22,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:22,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:24,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:27,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:27,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 883 [2020-10-14 01:11:27,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:11:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 01:11:27,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:27,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:11:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:11:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 01:11:27,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:11:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:11:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:27,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:27,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:27,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:11:27,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:27,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:11:27,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:27,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:27,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:11:27,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:11:27,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:11:27,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:11:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:27,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:27,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:27,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:11:27,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:27,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 01:11:27,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:27,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:27,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:11:27,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:11:27,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:11:27,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:11:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:27,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:28,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:28,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 01:11:28,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:28,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 01:11:28,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:28,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:28,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:11:28,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:11:28,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 01:11:28,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:11:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:11:29,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170242214] [2020-10-14 01:11:29,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:11:29,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:11:29,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872847139] [2020-10-14 01:11:29,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:11:29,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:11:29,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:11:29,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:11:29,242 INFO L87 Difference]: Start difference. First operand 7740 states and 10965 transitions. Second operand 7 states. [2020-10-14 01:11:40,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:11:40,092 INFO L93 Difference]: Finished difference Result 23339 states and 34046 transitions. [2020-10-14 01:11:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 01:11:40,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 865 [2020-10-14 01:11:40,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:11:40,160 INFO L225 Difference]: With dead ends: 23339 [2020-10-14 01:11:40,160 INFO L226 Difference]: Without dead ends: 15605 [2020-10-14 01:11:40,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:11:40,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15605 states. [2020-10-14 01:11:40,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15605 to 15598. [2020-10-14 01:11:40,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15598 states. [2020-10-14 01:11:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15598 states to 15598 states and 22005 transitions. [2020-10-14 01:11:40,692 INFO L78 Accepts]: Start accepts. Automaton has 15598 states and 22005 transitions. Word has length 865 [2020-10-14 01:11:40,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:11:40,693 INFO L479 AbstractCegarLoop]: Abstraction has 15598 states and 22005 transitions. [2020-10-14 01:11:40,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:11:40,693 INFO L276 IsEmpty]: Start isEmpty. Operand 15598 states and 22005 transitions. [2020-10-14 01:11:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2020-10-14 01:11:40,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:11:40,749 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:40,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:11:40,750 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:11:40,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:11:40,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2113479143, now seen corresponding path program 1 times [2020-10-14 01:11:40,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:11:40,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075045551] [2020-10-14 01:11:40,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:11:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:40,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:41,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:43,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:44,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:45,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:45,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:45,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 943 [2020-10-14 01:11:45,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:11:45,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-14 01:11:45,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:45,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:11:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 01:11:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 01:11:45,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:11:46,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:11:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:46,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:46,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:11:46,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:46,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:11:46,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:46,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:11:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:46,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:11:46,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:11:46,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:11:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:46,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:46,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:11:46,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:46,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 01:11:46,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:46,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:46,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:11:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:11:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 01:11:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:11:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 01:11:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:46,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:46,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:11:46,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 01:11:46,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:11:46,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 01:11:46,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:11:46,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:11:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:11:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:11:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 01:11:46,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:11:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:11:47,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075045551] [2020-10-14 01:11:47,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:11:47,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:11:47,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218491117] [2020-10-14 01:11:47,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:11:47,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:11:47,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:11:47,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:11:47,046 INFO L87 Difference]: Start difference. First operand 15598 states and 22005 transitions. Second operand 7 states. [2020-10-14 01:11:56,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:11:56,848 INFO L93 Difference]: Finished difference Result 46642 states and 67717 transitions. [2020-10-14 01:11:56,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 01:11:56,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 925 [2020-10-14 01:11:56,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:11:56,971 INFO L225 Difference]: With dead ends: 46642 [2020-10-14 01:11:56,972 INFO L226 Difference]: Without dead ends: 31050 [2020-10-14 01:11:57,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:11:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31050 states. [2020-10-14 01:11:57,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31050 to 31044. [2020-10-14 01:11:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31044 states. [2020-10-14 01:11:57,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31044 states to 31044 states and 41475 transitions. [2020-10-14 01:11:57,713 INFO L78 Accepts]: Start accepts. Automaton has 31044 states and 41475 transitions. Word has length 925 [2020-10-14 01:11:57,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:11:57,714 INFO L479 AbstractCegarLoop]: Abstraction has 31044 states and 41475 transitions. [2020-10-14 01:11:57,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:11:57,714 INFO L276 IsEmpty]: Start isEmpty. Operand 31044 states and 41475 transitions. [2020-10-14 01:11:57,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2020-10-14 01:11:57,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:11:57,807 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:57,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:11:57,807 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:11:57,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:11:57,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1927233001, now seen corresponding path program 1 times [2020-10-14 01:11:57,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:11:57,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415462902] [2020-10-14 01:11:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:11:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:11:57,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:58,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:58,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:11:59,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:02,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:02,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1046 [2020-10-14 01:12:02,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:12:02,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 01:12:02,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:02,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:12:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 01:12:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 01:12:02,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:03,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:12:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:03,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:03,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:03,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:12:03,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:03,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:12:03,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:03,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:12:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:12:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:03,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:12:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:03,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:03,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:03,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:12:03,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:03,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:12:03,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:03,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:03,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:12:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:12:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:03,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 01:12:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:03,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:03,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:03,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:12:03,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:03,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 01:12:03,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:03,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:12:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 01:12:03,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:12:03,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 01:12:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:03,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:03,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:03,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 01:12:03,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:03,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 01:12:03,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:03,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:03,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:12:03,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:12:03,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 01:12:03,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:03,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-14 01:12:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:03,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:03,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:03,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 01:12:03,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:03,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 01:12:03,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:03,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:03,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:12:03,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 01:12:03,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:12:03,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 314 proven. 73 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 01:12:03,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415462902] [2020-10-14 01:12:03,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:12:03,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:12:03,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130402158] [2020-10-14 01:12:03,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:12:03,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:12:03,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:12:03,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:12:03,847 INFO L87 Difference]: Start difference. First operand 31044 states and 41475 transitions. Second operand 7 states. [2020-10-14 01:12:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:12:19,745 INFO L93 Difference]: Finished difference Result 104452 states and 146649 transitions. [2020-10-14 01:12:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:12:19,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1024 [2020-10-14 01:12:19,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:12:19,970 INFO L225 Difference]: With dead ends: 104452 [2020-10-14 01:12:19,971 INFO L226 Difference]: Without dead ends: 70036 [2020-10-14 01:12:20,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:12:20,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70036 states. [2020-10-14 01:12:21,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70036 to 63287. [2020-10-14 01:12:21,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63287 states. [2020-10-14 01:12:21,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63287 states to 63287 states and 81857 transitions. [2020-10-14 01:12:21,278 INFO L78 Accepts]: Start accepts. Automaton has 63287 states and 81857 transitions. Word has length 1024 [2020-10-14 01:12:21,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:12:21,279 INFO L479 AbstractCegarLoop]: Abstraction has 63287 states and 81857 transitions. [2020-10-14 01:12:21,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:12:21,279 INFO L276 IsEmpty]: Start isEmpty. Operand 63287 states and 81857 transitions. [2020-10-14 01:12:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2020-10-14 01:12:21,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:12:21,413 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:12:21,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:12:21,413 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:12:21,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:12:21,414 INFO L82 PathProgramCache]: Analyzing trace with hash -2060260643, now seen corresponding path program 1 times [2020-10-14 01:12:21,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:12:21,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834689398] [2020-10-14 01:12:21,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:12:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:21,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:22,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:26,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:26,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1090 [2020-10-14 01:12:26,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:12:26,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 01:12:26,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:26,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:26,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:12:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:12:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 01:12:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:26,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:12:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:26,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:26,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:26,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:12:26,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:26,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:12:26,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:26,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:26,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:12:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:12:26,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:26,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:12:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:26,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:26,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:26,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:12:26,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:26,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:12:26,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:26,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:26,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:12:26,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:26,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:12:26,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:26,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:12:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:26,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:26,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:26,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 01:12:26,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:26,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 01:12:26,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:26,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:12:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:12:26,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 01:12:26,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:26,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 01:12:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:26,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:26,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:26,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 01:12:26,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:26,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 01:12:26,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:26,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:26,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:12:26,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 01:12:26,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:12:26,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:26,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-10-14 01:12:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:26,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:26,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:26,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 01:12:26,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:26,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:12:26,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:26,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:12:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 01:12:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:12:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 308 proven. 97 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-14 01:12:27,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834689398] [2020-10-14 01:12:27,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:12:27,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:12:27,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319001703] [2020-10-14 01:12:27,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:12:27,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:12:27,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:12:27,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:12:27,364 INFO L87 Difference]: Start difference. First operand 63287 states and 81857 transitions. Second operand 7 states. [2020-10-14 01:12:47,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:12:47,007 INFO L93 Difference]: Finished difference Result 202632 states and 278227 transitions. [2020-10-14 01:12:47,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:12:47,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1068 [2020-10-14 01:12:47,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:12:47,631 INFO L225 Difference]: With dead ends: 202632 [2020-10-14 01:12:47,632 INFO L226 Difference]: Without dead ends: 139355 [2020-10-14 01:12:47,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:12:47,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139355 states. [2020-10-14 01:12:53,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139355 to 138480. [2020-10-14 01:12:53,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138480 states. [2020-10-14 01:12:53,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138480 states to 138480 states and 185736 transitions. [2020-10-14 01:12:53,348 INFO L78 Accepts]: Start accepts. Automaton has 138480 states and 185736 transitions. Word has length 1068 [2020-10-14 01:12:53,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:12:53,348 INFO L479 AbstractCegarLoop]: Abstraction has 138480 states and 185736 transitions. [2020-10-14 01:12:53,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:12:53,349 INFO L276 IsEmpty]: Start isEmpty. Operand 138480 states and 185736 transitions. [2020-10-14 01:12:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1081 [2020-10-14 01:12:53,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:12:53,682 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:12:53,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:12:53,683 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:12:53,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:12:53,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1695856407, now seen corresponding path program 1 times [2020-10-14 01:12:53,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:12:53,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582123524] [2020-10-14 01:12:53,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:12:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:54,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:54,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:58,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:58,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1100 [2020-10-14 01:12:58,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:12:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 01:12:58,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:58,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 01:12:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:12:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 239 [2020-10-14 01:12:58,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:59,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:12:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:59,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:59,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:59,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:12:59,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:59,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:12:59,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:59,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:12:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:12:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:12:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:59,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:12:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:59,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:59,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:59,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 01:12:59,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-14 01:12:59,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:59,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:12:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:12:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-14 01:12:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:12:59,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 01:12:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:12:59,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:12:59,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:12:59,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:12:59,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:12:59,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:12:59,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:12:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 01:12:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:12:59,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:12:59,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:12:59,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 01:12:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:12:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:00,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:00,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 01:13:00,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:00,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 01:13:00,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:00,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:00,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:13:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 01:13:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:13:00,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:13:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 299 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 01:13:01,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582123524] [2020-10-14 01:13:01,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:13:01,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:13:01,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732947927] [2020-10-14 01:13:01,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:13:01,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:13:01,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:13:01,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:13:01,335 INFO L87 Difference]: Start difference. First operand 138480 states and 185736 transitions. Second operand 8 states. [2020-10-14 01:13:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:13:15,530 INFO L93 Difference]: Finished difference Result 298928 states and 406531 transitions. [2020-10-14 01:13:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:13:15,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1080 [2020-10-14 01:13:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:13:16,186 INFO L225 Difference]: With dead ends: 298928 [2020-10-14 01:13:16,187 INFO L226 Difference]: Without dead ends: 160458 [2020-10-14 01:13:16,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:13:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160458 states. [2020-10-14 01:13:22,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160458 to 156827. [2020-10-14 01:13:22,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156827 states. [2020-10-14 01:13:23,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156827 states to 156827 states and 211691 transitions. [2020-10-14 01:13:23,025 INFO L78 Accepts]: Start accepts. Automaton has 156827 states and 211691 transitions. Word has length 1080 [2020-10-14 01:13:23,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:13:23,026 INFO L479 AbstractCegarLoop]: Abstraction has 156827 states and 211691 transitions. [2020-10-14 01:13:23,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:13:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 156827 states and 211691 transitions. [2020-10-14 01:13:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1107 [2020-10-14 01:13:23,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:13:23,222 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:23,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 01:13:23,222 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:13:23,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:13:23,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1934112894, now seen corresponding path program 1 times [2020-10-14 01:13:23,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:13:23,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031879425] [2020-10-14 01:13:23,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:13:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:23,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:23,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:27,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:27,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:28,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:28,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:28,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1128 [2020-10-14 01:13:28,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:13:28,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 01:13:28,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:28,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 01:13:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-14 01:13:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 856 [2020-10-14 01:13:28,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:28,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:13:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:28,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:28,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:28,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:13:28,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:28,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:13:28,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:28,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:13:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:13:28,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:28,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:13:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:28,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:28,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:28,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 01:13:28,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:28,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:13:28,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:28,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:13:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:13:28,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:28,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 01:13:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:28,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:28,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 01:13:28,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:28,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 01:13:28,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:28,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:28,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:13:28,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:28,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-10-14 01:13:28,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:29,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 01:13:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:29,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:29,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:13:29,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:13:29,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:13:29,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:29,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:13:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 01:13:29,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:13:29,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-10-14 01:13:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:29,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:29,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:13:29,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 01:13:29,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:13:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-14 01:13:29,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:13:29,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:13:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:13:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:13:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 01:13:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:13:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 327 proven. 4 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-14 01:13:30,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031879425] [2020-10-14 01:13:30,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:13:30,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 01:13:30,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869042966] [2020-10-14 01:13:30,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:13:30,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:13:30,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:13:30,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:13:30,877 INFO L87 Difference]: Start difference. First operand 156827 states and 211691 transitions. Second operand 5 states. [2020-10-14 01:13:40,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:13:40,328 INFO L93 Difference]: Finished difference Result 313494 states and 421790 transitions. [2020-10-14 01:13:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:13:40,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1106 [2020-10-14 01:13:40,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:13:40,966 INFO L225 Difference]: With dead ends: 313494 [2020-10-14 01:13:40,967 INFO L226 Difference]: Without dead ends: 156829 [2020-10-14 01:13:41,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 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 01:13:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156829 states. [2020-10-14 01:13:47,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156829 to 156802. [2020-10-14 01:13:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156802 states. [2020-10-14 01:13:47,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156802 states to 156802 states and 206648 transitions. [2020-10-14 01:13:47,620 INFO L78 Accepts]: Start accepts. Automaton has 156802 states and 206648 transitions. Word has length 1106 [2020-10-14 01:13:47,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:13:47,621 INFO L479 AbstractCegarLoop]: Abstraction has 156802 states and 206648 transitions. [2020-10-14 01:13:47,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:13:47,621 INFO L276 IsEmpty]: Start isEmpty. Operand 156802 states and 206648 transitions. [2020-10-14 01:13:47,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1421 [2020-10-14 01:13:47,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:13:47,922 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:47,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 01:13:47,922 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:13:47,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:13:47,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1988449446, now seen corresponding path program 1 times [2020-10-14 01:13:47,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:13:47,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562341285] [2020-10-14 01:13:47,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:13:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:13:48,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:13:48,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking...