/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/Problem15_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:23:18,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:23:18,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:23:18,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:23:18,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:23:18,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:23:18,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:23:18,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:23:18,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:23:18,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:23:18,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:23:18,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:23:18,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:23:18,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:23:18,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:23:18,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:23:18,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:23:18,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:23:18,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:23:18,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:23:18,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:23:18,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:23:18,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:23:18,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:23:18,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:23:18,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:23:18,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:23:18,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:23:18,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:23:18,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:23:18,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:23:18,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:23:18,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:23:18,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:23:18,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:23:18,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:23:18,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:23:18,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:23:18,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:23:18,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:23:18,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:23:18,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 03:23:18,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:23:18,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:23:18,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:23:18,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:23:18,993 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:23:18,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:23:18,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:23:18,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:23:18,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:23:18,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:23:18,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:23:18,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:23:18,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:23:18,995 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:23:18,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:23:18,996 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:23:18,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:23:18,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:23:18,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:23:18,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:23:18,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:23:18,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:23:18,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:23:18,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:23:18,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:23:18,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:23:18,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:23:18,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:23:18,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:23:18,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:23:19,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:23:19,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:23:19,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:23:19,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:23:19,325 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:23:19,325 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label03.c [2020-10-14 03:23:19,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df8d3b07b/6d9dc3d2ce194f59ab84d3b3a8b70965/FLAGdc76efcf1 [2020-10-14 03:23:20,123 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:23:20,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label03.c [2020-10-14 03:23:20,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df8d3b07b/6d9dc3d2ce194f59ab84d3b3a8b70965/FLAGdc76efcf1 [2020-10-14 03:23:20,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df8d3b07b/6d9dc3d2ce194f59ab84d3b3a8b70965 [2020-10-14 03:23:20,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:23:20,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:23:20,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:23:20,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:23:20,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:23:20,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:23:20" (1/1) ... [2020-10-14 03:23:20,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72eb96f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:20, skipping insertion in model container [2020-10-14 03:23:20,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:23:20" (1/1) ... [2020-10-14 03:23:20,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:23:20,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:23:21,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:23:21,400 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:23:21,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:23:21,787 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:23:21,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:21 WrapperNode [2020-10-14 03:23:21,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:23:21,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:23:21,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:23:21,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:23:21,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:21" (1/1) ... [2020-10-14 03:23:21,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:21" (1/1) ... [2020-10-14 03:23:21,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:21" (1/1) ... [2020-10-14 03:23:21,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:21" (1/1) ... [2020-10-14 03:23:21,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:21" (1/1) ... [2020-10-14 03:23:21,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:21" (1/1) ... [2020-10-14 03:23:21,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:21" (1/1) ... [2020-10-14 03:23:21,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:23:21,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:23:21,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:23:21,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:23:21,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:23:22,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:23:22,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:23:22,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:23:22,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:23:22,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:23:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:23:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:23:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:23:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:23:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:23:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:23:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:23:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:23:28,153 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:23:28,153 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:23:28,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:23:28 BoogieIcfgContainer [2020-10-14 03:23:28,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:23:28,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:23:28,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:23:28,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:23:28,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:23:20" (1/3) ... [2020-10-14 03:23:28,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f5404e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:23:28, skipping insertion in model container [2020-10-14 03:23:28,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:21" (2/3) ... [2020-10-14 03:23:28,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f5404e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:23:28, skipping insertion in model container [2020-10-14 03:23:28,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:23:28" (3/3) ... [2020-10-14 03:23:28,182 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label03.c [2020-10-14 03:23:28,193 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:23:28,210 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:23:28,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:23:28,268 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:23:28,268 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:23:28,268 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:23:28,269 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:23:28,269 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:23:28,269 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:23:28,269 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:23:28,269 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:23:28,309 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:23:28,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 03:23:28,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:28,319 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] [2020-10-14 03:23:28,320 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:28,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:28,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1047931325, now seen corresponding path program 1 times [2020-10-14 03:23:28,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:28,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8289267] [2020-10-14 03:23:28,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:28,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:28,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 03:23:28,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:28,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-14 03:23:28,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:28,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:23:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:23:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 03:23:28,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 03:23:29,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:29,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:29,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:29,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:29,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:29,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 03:23:29,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:29,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:23:29,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:23:29,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:23:29,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8289267] [2020-10-14 03:23:29,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:23:29,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:23:29,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581357892] [2020-10-14 03:23:29,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:23:29,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:29,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:23:29,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:23:29,084 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:23:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:23:34,421 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-14 03:23:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:23:34,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-14 03:23:34,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:23:34,445 INFO L225 Difference]: With dead ends: 1224 [2020-10-14 03:23:34,445 INFO L226 Difference]: Without dead ends: 708 [2020-10-14 03:23:34,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:23:34,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-14 03:23:34,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-14 03:23:34,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-14 03:23:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-14 03:23:34,572 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 29 [2020-10-14 03:23:34,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:23:34,573 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-14 03:23:34,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:23:34,573 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-14 03:23:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 03:23:34,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:34,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:23:34,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:23:34,582 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:34,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:34,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1128001955, now seen corresponding path program 1 times [2020-10-14 03:23:34,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:34,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817384056] [2020-10-14 03:23:34,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:35,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:35,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:35,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 03:23:35,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:23:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1186 [2020-10-14 03:23:35,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:35,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:23:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:23:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 03:23:35,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:35,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:35,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:35,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:35,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:35,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:23:35,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:35,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:23:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:23:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:35,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:23:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:35,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:36,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:36,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:23:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 03:23:36,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:36,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:36,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:36,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:23:36,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:36,083 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:23:36,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817384056] [2020-10-14 03:23:36,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:23:36,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:23:36,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642361705] [2020-10-14 03:23:36,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:23:36,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:36,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:23:36,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:23:36,088 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 6 states. [2020-10-14 03:23:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:23:43,727 INFO L93 Difference]: Finished difference Result 2018 states and 3286 transitions. [2020-10-14 03:23:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:23:43,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-14 03:23:43,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:23:43,740 INFO L225 Difference]: With dead ends: 2018 [2020-10-14 03:23:43,741 INFO L226 Difference]: Without dead ends: 1330 [2020-10-14 03:23:43,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:23:43,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2020-10-14 03:23:43,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1326. [2020-10-14 03:23:43,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1326 states. [2020-10-14 03:23:43,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1890 transitions. [2020-10-14 03:23:43,828 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1890 transitions. Word has length 99 [2020-10-14 03:23:43,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:23:43,829 INFO L479 AbstractCegarLoop]: Abstraction has 1326 states and 1890 transitions. [2020-10-14 03:23:43,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:23:43,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1890 transitions. [2020-10-14 03:23:43,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 03:23:43,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:43,849 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:23:43,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:23:43,853 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:43,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:43,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1797880555, now seen corresponding path program 1 times [2020-10-14 03:23:43,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:43,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916859807] [2020-10-14 03:23:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:43,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:44,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:45,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:45,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 03:23:45,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:23:45,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1293 [2020-10-14 03:23:45,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:45,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:23:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 03:23:45,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 03:23:45,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:45,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:45,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:45,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:45,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:45,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:23:45,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:45,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:23:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:23:45,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:23:45,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:23:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:45,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:45,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:45,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:23:45,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:45,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 03:23:45,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:45,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:23:45,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:23:45,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916859807] [2020-10-14 03:23:45,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:23:45,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:23:45,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678412888] [2020-10-14 03:23:45,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:23:45,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:45,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:23:45,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:23:45,622 INFO L87 Difference]: Start difference. First operand 1326 states and 1890 transitions. Second operand 5 states. [2020-10-14 03:23:55,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:23:55,616 INFO L93 Difference]: Finished difference Result 3289 states and 4934 transitions. [2020-10-14 03:23:55,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:23:55,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-14 03:23:55,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:23:55,633 INFO L225 Difference]: With dead ends: 3289 [2020-10-14 03:23:55,633 INFO L226 Difference]: Without dead ends: 2278 [2020-10-14 03:23:55,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:23:55,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2020-10-14 03:23:55,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 2266. [2020-10-14 03:23:55,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2266 states. [2020-10-14 03:23:55,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 3248 transitions. [2020-10-14 03:23:55,707 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 3248 transitions. Word has length 158 [2020-10-14 03:23:55,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:23:55,708 INFO L479 AbstractCegarLoop]: Abstraction has 2266 states and 3248 transitions. [2020-10-14 03:23:55,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:23:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 3248 transitions. [2020-10-14 03:23:55,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 03:23:55,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:55,713 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:23:55,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:23:55,713 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:55,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:55,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1408524035, now seen corresponding path program 1 times [2020-10-14 03:23:55,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:55,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097402933] [2020-10-14 03:23:55,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:55,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:55,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:56,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:57,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:00,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:00,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:00,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 03:24:00,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:24:00,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-14 03:24:00,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:00,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:00,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:00,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-10-14 03:24:00,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:24:00,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:00,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:00,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:00,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:00,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:00,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:00,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:24:00,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:00,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:00,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:00,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:00,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:00,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:00,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:24:00,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:00,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 03:24:00,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:00,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:00,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 03:24:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:01,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:01,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:01,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:24:01,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:01,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 03:24:01,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:01,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:24:01,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:24:01,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:24:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 03:24:01,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097402933] [2020-10-14 03:24:01,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:24:01,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:24:01,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136057222] [2020-10-14 03:24:01,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:01,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:01,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:01,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:01,182 INFO L87 Difference]: Start difference. First operand 2266 states and 3248 transitions. Second operand 5 states. [2020-10-14 03:24:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:10,866 INFO L93 Difference]: Finished difference Result 5478 states and 8154 transitions. [2020-10-14 03:24:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:10,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-14 03:24:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:10,887 INFO L225 Difference]: With dead ends: 5478 [2020-10-14 03:24:10,887 INFO L226 Difference]: Without dead ends: 3526 [2020-10-14 03:24:10,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:24:10,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2020-10-14 03:24:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 3513. [2020-10-14 03:24:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3513 states. [2020-10-14 03:24:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 5121 transitions. [2020-10-14 03:24:10,988 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 5121 transitions. Word has length 198 [2020-10-14 03:24:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:10,989 INFO L479 AbstractCegarLoop]: Abstraction has 3513 states and 5121 transitions. [2020-10-14 03:24:10,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:10,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 5121 transitions. [2020-10-14 03:24:10,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 03:24:10,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:10,994 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:24:10,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:24:10,995 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:10,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1613892748, now seen corresponding path program 1 times [2020-10-14 03:24:10,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:10,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668200214] [2020-10-14 03:24:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:13,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:16,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:16,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 03:24:16,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:24:16,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 03:24:16,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:16,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:16,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:16,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:24:16,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:24:16,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:16,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:16,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:16,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:16,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:16,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:16,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:24:16,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:16,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:16,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:16,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:16,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:16,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:16,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:24:16,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:16,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 03:24:16,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:16,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:24:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:16,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 03:24:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:16,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:16,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:16,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:24:16,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:16,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 03:24:16,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:16,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:24:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 03:24:16,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:24:16,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668200214] [2020-10-14 03:24:16,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:16,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:24:16,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733648617] [2020-10-14 03:24:16,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:24:16,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:16,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:24:16,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:24:16,492 INFO L87 Difference]: Start difference. First operand 3513 states and 5121 transitions. Second operand 7 states. [2020-10-14 03:24:26,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:26,564 INFO L93 Difference]: Finished difference Result 9435 states and 15440 transitions. [2020-10-14 03:24:26,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:24:26,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-14 03:24:26,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:26,618 INFO L225 Difference]: With dead ends: 9435 [2020-10-14 03:24:26,619 INFO L226 Difference]: Without dead ends: 6236 [2020-10-14 03:24:26,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:24:26,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2020-10-14 03:24:26,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 5739. [2020-10-14 03:24:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5739 states. [2020-10-14 03:24:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5739 states to 5739 states and 7791 transitions. [2020-10-14 03:24:26,906 INFO L78 Accepts]: Start accepts. Automaton has 5739 states and 7791 transitions. Word has length 202 [2020-10-14 03:24:26,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:26,907 INFO L479 AbstractCegarLoop]: Abstraction has 5739 states and 7791 transitions. [2020-10-14 03:24:26,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:24:26,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5739 states and 7791 transitions. [2020-10-14 03:24:26,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 03:24:26,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:26,912 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:24:26,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:24:26,913 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:26,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:26,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1610789709, now seen corresponding path program 1 times [2020-10-14 03:24:26,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:26,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713759432] [2020-10-14 03:24:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:26,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:27,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:27,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:27,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:29,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:29,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:31,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:31,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 03:24:31,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:24:31,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 03:24:31,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:31,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:24:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:24:31,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:24:31,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:32,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:32,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:32,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:32,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:32,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:32,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:24:32,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:32,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:32,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:32,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:32,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:32,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:32,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:24:32,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 03:24:32,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:32,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:32,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:24:32,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:32,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 03:24:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:32,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:32,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:32,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:32,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:24:32,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:24:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-14 03:24:32,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:32,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:24:32,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:24:32,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:24:32,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:24:32,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713759432] [2020-10-14 03:24:32,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:32,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:24:32,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348438772] [2020-10-14 03:24:32,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:24:32,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:32,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:24:32,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:24:32,911 INFO L87 Difference]: Start difference. First operand 5739 states and 7791 transitions. Second operand 8 states. [2020-10-14 03:24:44,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:44,271 INFO L93 Difference]: Finished difference Result 12180 states and 16463 transitions. [2020-10-14 03:24:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:24:44,272 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 203 [2020-10-14 03:24:44,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:44,299 INFO L225 Difference]: With dead ends: 12180 [2020-10-14 03:24:44,300 INFO L226 Difference]: Without dead ends: 5825 [2020-10-14 03:24:44,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-14 03:24:44,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5825 states. [2020-10-14 03:24:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5825 to 5761. [2020-10-14 03:24:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2020-10-14 03:24:44,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 7820 transitions. [2020-10-14 03:24:44,464 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 7820 transitions. Word has length 203 [2020-10-14 03:24:44,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:44,465 INFO L479 AbstractCegarLoop]: Abstraction has 5761 states and 7820 transitions. [2020-10-14 03:24:44,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:24:44,465 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 7820 transitions. [2020-10-14 03:24:44,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 03:24:44,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:44,470 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:44,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:24:44,471 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:44,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:44,472 INFO L82 PathProgramCache]: Analyzing trace with hash -219683770, now seen corresponding path program 1 times [2020-10-14 03:24:44,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:44,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043934669] [2020-10-14 03:24:44,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:44,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:44,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:45,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:46,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:46,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:48,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:48,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 03:24:48,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 03:24:48,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3831 [2020-10-14 03:24:48,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:48,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 03:24:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:24:48,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:48,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:48,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:48,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:48,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:48,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:48,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:24:48,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:48,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:48,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:48,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:48,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:48,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:48,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:24:48,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:48,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 03:24:48,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:48,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:48,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:48,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:48,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:24:48,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:48,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 03:24:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:48,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:48,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:24:48,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:48,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 03:24:48,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:48,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:48,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:48,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:24:48,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:24:48,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:24:49,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043934669] [2020-10-14 03:24:49,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:49,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:24:49,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040009393] [2020-10-14 03:24:49,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:24:49,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:49,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:24:49,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:24:49,036 INFO L87 Difference]: Start difference. First operand 5761 states and 7820 transitions. Second operand 7 states. [2020-10-14 03:25:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:02,426 INFO L93 Difference]: Finished difference Result 12875 states and 17922 transitions. [2020-10-14 03:25:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:25:02,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-10-14 03:25:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:02,496 INFO L225 Difference]: With dead ends: 12875 [2020-10-14 03:25:02,496 INFO L226 Difference]: Without dead ends: 7428 [2020-10-14 03:25:02,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:02,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7428 states. [2020-10-14 03:25:02,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7428 to 7405. [2020-10-14 03:25:02,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7405 states. [2020-10-14 03:25:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7405 states to 7405 states and 10124 transitions. [2020-10-14 03:25:02,804 INFO L78 Accepts]: Start accepts. Automaton has 7405 states and 10124 transitions. Word has length 206 [2020-10-14 03:25:02,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:02,805 INFO L479 AbstractCegarLoop]: Abstraction has 7405 states and 10124 transitions. [2020-10-14 03:25:02,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:02,806 INFO L276 IsEmpty]: Start isEmpty. Operand 7405 states and 10124 transitions. [2020-10-14 03:25:02,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 03:25:02,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:02,815 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:25:02,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:25:02,816 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:02,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:02,817 INFO L82 PathProgramCache]: Analyzing trace with hash 958745124, now seen corresponding path program 1 times [2020-10-14 03:25:02,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:02,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474909860] [2020-10-14 03:25:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:02,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:03,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:04,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:06,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:06,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 03:25:06,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:25:06,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3186 [2020-10-14 03:25:06,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:06,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 03:25:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 03:25:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:06,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:06,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:06,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:06,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:06,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:06,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:06,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:06,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:06,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:06,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:06,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:25:06,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:06,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 03:25:06,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:06,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:06,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:06,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:06,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:25:06,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:06,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 03:25:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:06,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:06,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:06,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:25:06,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:06,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 03:25:06,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:06,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:06,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:06,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:06,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 03:25:06,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:06,604 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:06,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474909860] [2020-10-14 03:25:06,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:06,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:06,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109823892] [2020-10-14 03:25:06,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:06,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:06,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:06,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:06,607 INFO L87 Difference]: Start difference. First operand 7405 states and 10124 transitions. Second operand 7 states. [2020-10-14 03:25:16,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:16,016 INFO L93 Difference]: Finished difference Result 17197 states and 25475 transitions. [2020-10-14 03:25:16,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:25:16,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-14 03:25:16,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:16,074 INFO L225 Difference]: With dead ends: 17197 [2020-10-14 03:25:16,074 INFO L226 Difference]: Without dead ends: 10106 [2020-10-14 03:25:16,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10106 states. [2020-10-14 03:25:16,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10106 to 9386. [2020-10-14 03:25:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9386 states. [2020-10-14 03:25:16,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9386 states to 9386 states and 12805 transitions. [2020-10-14 03:25:16,386 INFO L78 Accepts]: Start accepts. Automaton has 9386 states and 12805 transitions. Word has length 214 [2020-10-14 03:25:16,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:16,387 INFO L479 AbstractCegarLoop]: Abstraction has 9386 states and 12805 transitions. [2020-10-14 03:25:16,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:16,387 INFO L276 IsEmpty]: Start isEmpty. Operand 9386 states and 12805 transitions. [2020-10-14 03:25:16,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 03:25:16,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:16,395 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:25:16,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:25:16,395 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:16,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:16,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1656560158, now seen corresponding path program 1 times [2020-10-14 03:25:16,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:16,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343591642] [2020-10-14 03:25:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:16,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:17,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:17,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:20,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:20,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-14 03:25:20,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:25:20,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3779 [2020-10-14 03:25:20,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:20,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:25:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:25:20,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:20,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:20,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:20,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:20,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:20,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:20,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:20,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:20,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:20,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:20,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:20,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:20,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:20,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:20,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:25:20,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:20,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 03:25:20,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:20,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:20,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:20,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:20,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:25:20,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:20,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 03:25:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:20,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:20,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:20,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:25:20,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 03:25:20,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:20,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:25:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:20,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343591642] [2020-10-14 03:25:20,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:20,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:20,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612872295] [2020-10-14 03:25:20,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:20,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:20,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:20,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:20,611 INFO L87 Difference]: Start difference. First operand 9386 states and 12805 transitions. Second operand 7 states. [2020-10-14 03:25:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:37,013 INFO L93 Difference]: Finished difference Result 31482 states and 47828 transitions. [2020-10-14 03:25:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:25:37,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-10-14 03:25:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:37,109 INFO L225 Difference]: With dead ends: 31482 [2020-10-14 03:25:37,109 INFO L226 Difference]: Without dead ends: 20829 [2020-10-14 03:25:37,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:37,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20829 states. [2020-10-14 03:25:37,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20829 to 19417. [2020-10-14 03:25:37,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19417 states. [2020-10-14 03:25:37,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19417 states to 19417 states and 26553 transitions. [2020-10-14 03:25:37,679 INFO L78 Accepts]: Start accepts. Automaton has 19417 states and 26553 transitions. Word has length 222 [2020-10-14 03:25:37,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:37,679 INFO L479 AbstractCegarLoop]: Abstraction has 19417 states and 26553 transitions. [2020-10-14 03:25:37,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:37,679 INFO L276 IsEmpty]: Start isEmpty. Operand 19417 states and 26553 transitions. [2020-10-14 03:25:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-14 03:25:37,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:37,690 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:25:37,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:25:37,690 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:37,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:37,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1383490542, now seen corresponding path program 1 times [2020-10-14 03:25:37,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:37,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651518154] [2020-10-14 03:25:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:37,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:37,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:37,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:39,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:42,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:42,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 03:25:42,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:25:42,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 03:25:42,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:42,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:25:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:25:42,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:42,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:42,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:42,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:42,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:42,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:42,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:42,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:42,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:42,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:42,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:42,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:42,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:25:42,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 03:25:42,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:42,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:25:42,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:42,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 03:25:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:43,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:43,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:43,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:25:43,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:43,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 03:25:43,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:43,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:43,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:25:43,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:43,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651518154] [2020-10-14 03:25:43,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:43,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:43,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815453646] [2020-10-14 03:25:43,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:43,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:43,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:43,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:43,468 INFO L87 Difference]: Start difference. First operand 19417 states and 26553 transitions. Second operand 7 states. [2020-10-14 03:26:03,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:03,551 INFO L93 Difference]: Finished difference Result 39411 states and 57272 transitions. [2020-10-14 03:26:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:26:03,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-10-14 03:26:03,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:03,758 INFO L225 Difference]: With dead ends: 39411 [2020-10-14 03:26:03,758 INFO L226 Difference]: Without dead ends: 23948 [2020-10-14 03:26:03,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:03,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23948 states. [2020-10-14 03:26:04,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23948 to 21880. [2020-10-14 03:26:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21880 states. [2020-10-14 03:26:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21880 states to 21880 states and 28766 transitions. [2020-10-14 03:26:04,374 INFO L78 Accepts]: Start accepts. Automaton has 21880 states and 28766 transitions. Word has length 227 [2020-10-14 03:26:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:04,375 INFO L479 AbstractCegarLoop]: Abstraction has 21880 states and 28766 transitions. [2020-10-14 03:26:04,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 21880 states and 28766 transitions. [2020-10-14 03:26:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 03:26:04,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:04,384 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:26:04,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:26:04,385 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:04,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:04,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1117998216, now seen corresponding path program 1 times [2020-10-14 03:26:04,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:04,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977048766] [2020-10-14 03:26:04,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:04,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:06,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:06,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 03:26:06,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:26:06,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2006 [2020-10-14 03:26:06,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:06,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:06,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:06,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 227 [2020-10-14 03:26:06,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 03:26:06,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:06,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:06,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:06,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:06,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:06,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:06,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:06,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:06,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:06,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:06,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:06,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:26:06,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:06,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 03:26:06,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:06,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:06,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 03:26:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:06,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:06,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:06,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:26:06,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:06,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 03:26:06,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:06,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:06,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:06,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:06,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 03:26:06,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-14 03:26:06,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977048766] [2020-10-14 03:26:06,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:06,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:26:06,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411520555] [2020-10-14 03:26:06,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:26:06,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:06,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:26:06,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:26:06,974 INFO L87 Difference]: Start difference. First operand 21880 states and 28766 transitions. Second operand 5 states. [2020-10-14 03:26:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:21,737 INFO L93 Difference]: Finished difference Result 41859 states and 54981 transitions. [2020-10-14 03:26:21,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:26:21,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-14 03:26:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:21,869 INFO L225 Difference]: With dead ends: 41859 [2020-10-14 03:26:21,869 INFO L226 Difference]: Without dead ends: 26485 [2020-10-14 03:26:21,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:26:21,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26485 states. [2020-10-14 03:26:22,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26485 to 19368. [2020-10-14 03:26:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19368 states. [2020-10-14 03:26:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19368 states to 19368 states and 24853 transitions. [2020-10-14 03:26:22,500 INFO L78 Accepts]: Start accepts. Automaton has 19368 states and 24853 transitions. Word has length 244 [2020-10-14 03:26:22,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:22,502 INFO L479 AbstractCegarLoop]: Abstraction has 19368 states and 24853 transitions. [2020-10-14 03:26:22,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:26:22,502 INFO L276 IsEmpty]: Start isEmpty. Operand 19368 states and 24853 transitions. [2020-10-14 03:26:22,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 03:26:22,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:22,521 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:26:22,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:26:22,521 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:22,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:22,522 INFO L82 PathProgramCache]: Analyzing trace with hash -740691100, now seen corresponding path program 1 times [2020-10-14 03:26:22,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:22,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343362740] [2020-10-14 03:26:22,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:22,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:22,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:24,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:26,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:26,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 03:26:26,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:26:26,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3603 [2020-10-14 03:26:26,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:26,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:26,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:26,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 03:26:26,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:26:26,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:26,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:26,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:26,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:26,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:26,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:26,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:26,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:26,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:26,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:26,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:26,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:26,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:26,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:26,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:26,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:26:26,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:26,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 03:26:26,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:26,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:26:26,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:26,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 03:26:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:26,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:26,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:26,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:26:26,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:26,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:26:26,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:26,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:26,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:26,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:26,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 03:26:26,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:26,643 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:26:26,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343362740] [2020-10-14 03:26:26,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:26,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:26,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117760941] [2020-10-14 03:26:26,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:26,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:26,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:26,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:26,645 INFO L87 Difference]: Start difference. First operand 19368 states and 24853 transitions. Second operand 7 states. [2020-10-14 03:26:45,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:45,745 INFO L93 Difference]: Finished difference Result 39418 states and 50789 transitions. [2020-10-14 03:26:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:26:45,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-14 03:26:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:45,828 INFO L225 Difference]: With dead ends: 39418 [2020-10-14 03:26:45,828 INFO L226 Difference]: Without dead ends: 20364 [2020-10-14 03:26:45,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:45,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20364 states. [2020-10-14 03:26:46,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20364 to 20012. [2020-10-14 03:26:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20012 states. [2020-10-14 03:26:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20012 states to 20012 states and 24128 transitions. [2020-10-14 03:26:46,598 INFO L78 Accepts]: Start accepts. Automaton has 20012 states and 24128 transitions. Word has length 248 [2020-10-14 03:26:46,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:46,599 INFO L479 AbstractCegarLoop]: Abstraction has 20012 states and 24128 transitions. [2020-10-14 03:26:46,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand 20012 states and 24128 transitions. [2020-10-14 03:26:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-14 03:26:46,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:46,616 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:26:46,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:26:46,617 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:46,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:46,618 INFO L82 PathProgramCache]: Analyzing trace with hash -2044875293, now seen corresponding path program 1 times [2020-10-14 03:26:46,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:46,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119121447] [2020-10-14 03:26:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:46,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:46,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:46,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:47,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:48,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:48,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 03:26:48,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:26:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2140 [2020-10-14 03:26:48,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:48,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 03:26:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 03:26:48,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:48,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:48,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:48,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:48,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:48,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:48,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:48,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:48,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:48,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:49,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:49,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:26:49,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:49,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 03:26:49,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:49,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:49,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:49,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:49,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 03:26:49,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:49,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 03:26:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:49,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:49,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:49,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 03:26:49,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:49,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 03:26:49,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:49,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:49,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:49,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:49,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 03:26:49,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:26:49,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119121447] [2020-10-14 03:26:49,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:49,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:49,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366542099] [2020-10-14 03:26:49,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:49,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:49,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:49,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:49,430 INFO L87 Difference]: Start difference. First operand 20012 states and 24128 transitions. Second operand 7 states.