/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_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:22:44,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:22:45,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:22:45,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:22:45,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:22:45,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:22:45,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:22:45,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:22:45,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:22:45,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:22:45,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:22:45,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:22:45,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:22:45,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:22:45,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:22:45,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:22:45,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:22:45,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:22:45,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:22:45,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:22:45,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:22:45,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:22:45,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:22:45,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:22:45,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:22:45,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:22:45,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:22:45,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:22:45,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:22:45,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:22:45,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:22:45,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:22:45,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:22:45,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:22:45,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:22:45,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:22:45,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:22:45,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:22:45,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:22:45,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:22:45,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:22:45,113 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 03:22:45,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:22:45,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:22:45,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:22:45,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:22:45,136 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:22:45,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:22:45,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:22:45,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:22:45,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:22:45,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:22:45,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:22:45,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:22:45,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:22:45,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:22:45,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:22:45,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:22:45,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:22:45,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:22:45,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:22:45,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:22:45,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:22:45,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:22:45,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:22:45,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:22:45,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:22:45,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:22:45,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:22:45,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:22:45,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:22:45,141 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 03:22:45,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:22:45,436 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:22:45,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:22:45,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:22:45,441 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:22:45,442 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label00.c [2020-10-14 03:22:45,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89fdfd646/c58350baa0424374afc57c188f9469ef/FLAG77a83ff15 [2020-10-14 03:22:46,184 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:22:46,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label00.c [2020-10-14 03:22:46,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89fdfd646/c58350baa0424374afc57c188f9469ef/FLAG77a83ff15 [2020-10-14 03:22:46,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89fdfd646/c58350baa0424374afc57c188f9469ef [2020-10-14 03:22:46,340 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:22:46,341 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:22:46,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:22:46,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:22:46,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:22:46,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:22:46" (1/1) ... [2020-10-14 03:22:46,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:22:46, skipping insertion in model container [2020-10-14 03:22:46,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:22:46" (1/1) ... [2020-10-14 03:22:46,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:22:46,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:22:47,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:22:47,410 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:22:47,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:22:47,697 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:22:47,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:22:47 WrapperNode [2020-10-14 03:22:47,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:22:47,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:22:47,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:22:47,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:22:47,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:22:47" (1/1) ... [2020-10-14 03:22:47,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:22:47" (1/1) ... [2020-10-14 03:22:47,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:22:47" (1/1) ... [2020-10-14 03:22:47,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:22:47" (1/1) ... [2020-10-14 03:22:47,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:22:47" (1/1) ... [2020-10-14 03:22:47,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:22:47" (1/1) ... [2020-10-14 03:22:47,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:22:47" (1/1) ... [2020-10-14 03:22:47,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:22:47,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:22:47,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:22:47,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:22:47,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:22:47" (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 03:22:47,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:22:47,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:22:47,983 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:22:47,984 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:22:47,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:22:47,984 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:22:47,985 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:22:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:22:47,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:22:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:22:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:22:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:22:47,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:22:53,867 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:22:53,867 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:22:53,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:22:53 BoogieIcfgContainer [2020-10-14 03:22:53,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:22:53,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:22:53,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:22:53,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:22:53,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:22:46" (1/3) ... [2020-10-14 03:22:53,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9c55bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:22:53, skipping insertion in model container [2020-10-14 03:22:53,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:22:47" (2/3) ... [2020-10-14 03:22:53,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9c55bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:22:53, skipping insertion in model container [2020-10-14 03:22:53,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:22:53" (3/3) ... [2020-10-14 03:22:53,884 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label00.c [2020-10-14 03:22:53,894 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:22:53,903 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:22:53,917 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:22:53,946 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:22:53,946 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:22:53,946 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:22:53,946 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:22:53,946 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:22:53,947 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:22:53,947 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:22:53,947 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:22:53,977 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:22:53,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 03:22:53,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:22:53,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:22:53,988 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:22:53,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:22:53,995 INFO L82 PathProgramCache]: Analyzing trace with hash 982719640, now seen corresponding path program 1 times [2020-10-14 03:22:54,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:22:54,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645089751] [2020-10-14 03:22:54,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:22:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:22:54,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:22:54,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:22:54,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 03:22:54,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:22:54,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-14 03:22:54,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:22:54,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:22:54,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:22:54,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:22:54,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 03:22:54,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:22:54,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:22:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:22:54,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:22:54,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:22:54,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:22:54,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:22:54,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 03:22:54,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:22:54,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:22:54,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:22:54,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:22:54,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:22:54,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:22:54,531 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 03:22:54,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645089751] [2020-10-14 03:22:54,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:22:54,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:22:54,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084059540] [2020-10-14 03:22:54,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:22:54,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:22:54,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:22:54,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:22:54,561 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:23:02,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:23:02,645 INFO L93 Difference]: Finished difference Result 1198 states and 2162 transitions. [2020-10-14 03:23:02,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:23:02,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-14 03:23:02,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:23:02,670 INFO L225 Difference]: With dead ends: 1198 [2020-10-14 03:23:02,670 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 03:23:02,679 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 03:23:02,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 03:23:02,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 688. [2020-10-14 03:23:02,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-14 03:23:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1008 transitions. [2020-10-14 03:23:02,787 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1008 transitions. Word has length 12 [2020-10-14 03:23:02,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:23:02,787 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 1008 transitions. [2020-10-14 03:23:02,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:23:02,787 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1008 transitions. [2020-10-14 03:23:02,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 03:23:02,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:02,792 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:23:02,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:23:02,792 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:02,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:02,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1111586940, now seen corresponding path program 1 times [2020-10-14 03:23:02,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:02,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612926979] [2020-10-14 03:23:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:02,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:03,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:03,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:23:03,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:03,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-14 03:23:03,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:03,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:23:03,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:23:03,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:23:03,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:03,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:03,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:03,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:03,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:03,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:03,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:23:03,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:03,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:03,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:23:03,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:03,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:23:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:03,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:03,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:03,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:23:03,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:03,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 03:23:03,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:03,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:03,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:23:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:23:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:23:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:23:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:23:03,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612926979] [2020-10-14 03:23:03,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:23:03,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:23:03,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864940787] [2020-10-14 03:23:03,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:23:03,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:03,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:23:03,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:23:03,710 INFO L87 Difference]: Start difference. First operand 688 states and 1008 transitions. Second operand 7 states. [2020-10-14 03:23:13,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:23:13,358 INFO L93 Difference]: Finished difference Result 1704 states and 2407 transitions. [2020-10-14 03:23:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:23:13,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-10-14 03:23:13,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:23:13,366 INFO L225 Difference]: With dead ends: 1704 [2020-10-14 03:23:13,366 INFO L226 Difference]: Without dead ends: 1022 [2020-10-14 03:23:13,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:23:13,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2020-10-14 03:23:13,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1009. [2020-10-14 03:23:13,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-10-14 03:23:13,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1360 transitions. [2020-10-14 03:23:13,431 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1360 transitions. Word has length 81 [2020-10-14 03:23:13,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:23:13,432 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1360 transitions. [2020-10-14 03:23:13,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:23:13,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1360 transitions. [2020-10-14 03:23:13,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 03:23:13,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:13,439 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:23:13,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:23:13,440 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:13,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1870719153, now seen corresponding path program 1 times [2020-10-14 03:23:13,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:13,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260196807] [2020-10-14 03:23:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:13,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:14,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:14,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:23:14,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:23:14,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 736 [2020-10-14 03:23:14,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:14,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:23:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 03:23:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 03:23:14,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:23:14,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:14,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:14,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:14,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:14,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:14,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:23:14,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:14,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:23:14,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:14,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:23:14,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:23:14,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:23:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:14,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:14,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 03:23:14,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:14,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 03:23:14,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:14,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:23:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:23:14,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260196807] [2020-10-14 03:23:14,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:23:14,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:23:14,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282014671] [2020-10-14 03:23:14,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:23:14,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:14,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:23:14,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:23:14,489 INFO L87 Difference]: Start difference. First operand 1009 states and 1360 transitions. Second operand 5 states. [2020-10-14 03:23:20,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:23:20,783 INFO L93 Difference]: Finished difference Result 1727 states and 2605 transitions. [2020-10-14 03:23:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:23:20,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-14 03:23:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:23:20,792 INFO L225 Difference]: With dead ends: 1727 [2020-10-14 03:23:20,792 INFO L226 Difference]: Without dead ends: 1343 [2020-10-14 03:23:20,794 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 03:23:20,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-10-14 03:23:20,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1328. [2020-10-14 03:23:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-10-14 03:23:20,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1802 transitions. [2020-10-14 03:23:20,847 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1802 transitions. Word has length 86 [2020-10-14 03:23:20,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:23:20,849 INFO L479 AbstractCegarLoop]: Abstraction has 1328 states and 1802 transitions. [2020-10-14 03:23:20,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:23:20,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1802 transitions. [2020-10-14 03:23:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 03:23:20,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:20,860 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:23:20,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:23:20,865 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:20,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:20,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1735698051, now seen corresponding path program 1 times [2020-10-14 03:23:20,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:20,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777216616] [2020-10-14 03:23:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:21,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:21,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 03:23:21,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:23:21,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 935 [2020-10-14 03:23:21,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:21,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:23:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 03:23:21,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 03:23:21,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 03:23:21,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:21,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:21,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:21,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:21,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:23:21,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:21,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:23:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:23:21,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:21,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:23:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:21,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:22,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:22,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:23:22,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:22,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 03:23:22,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:22,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:22,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:23:22,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:23:22,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777216616] [2020-10-14 03:23:22,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:23:22,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:23:22,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294009526] [2020-10-14 03:23:22,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:23:22,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:22,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:23:22,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:23:22,113 INFO L87 Difference]: Start difference. First operand 1328 states and 1802 transitions. Second operand 5 states. [2020-10-14 03:23:31,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:23:31,195 INFO L93 Difference]: Finished difference Result 3289 states and 4658 transitions. [2020-10-14 03:23:31,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:23:31,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-14 03:23:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:23:31,214 INFO L225 Difference]: With dead ends: 3289 [2020-10-14 03:23:31,214 INFO L226 Difference]: Without dead ends: 2274 [2020-10-14 03:23:31,218 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 03:23:31,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2020-10-14 03:23:31,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2272. [2020-10-14 03:23:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2272 states. [2020-10-14 03:23:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 2949 transitions. [2020-10-14 03:23:31,284 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 2949 transitions. Word has length 92 [2020-10-14 03:23:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:23:31,285 INFO L479 AbstractCegarLoop]: Abstraction has 2272 states and 2949 transitions. [2020-10-14 03:23:31,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:23:31,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 2949 transitions. [2020-10-14 03:23:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 03:23:31,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:31,287 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:23:31,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:23:31,287 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:31,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:31,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1529626425, now seen corresponding path program 1 times [2020-10-14 03:23:31,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:31,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677131646] [2020-10-14 03:23:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:31,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:31,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:32,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:32,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 03:23:32,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:23:32,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-14 03:23:32,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:32,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:23:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 03:23:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 03:23:32,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:32,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:32,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:32,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:32,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:32,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:32,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:23:32,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:32,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:32,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:23:32,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:32,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:23:32,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:32,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:23:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:32,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:32,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:23:32,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:32,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 03:23:32,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:32,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:32,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:32,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:32,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:23:32,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:23:32,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677131646] [2020-10-14 03:23:32,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:23:32,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:23:32,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634701722] [2020-10-14 03:23:32,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:23:32,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:32,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:23:32,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:23:32,332 INFO L87 Difference]: Start difference. First operand 2272 states and 2949 transitions. Second operand 5 states. [2020-10-14 03:23:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:23:40,103 INFO L93 Difference]: Finished difference Result 4880 states and 6623 transitions. [2020-10-14 03:23:40,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:23:40,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-14 03:23:40,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:23:40,123 INFO L225 Difference]: With dead ends: 4880 [2020-10-14 03:23:40,123 INFO L226 Difference]: Without dead ends: 3545 [2020-10-14 03:23:40,128 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 03:23:40,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3545 states. [2020-10-14 03:23:40,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3545 to 3534. [2020-10-14 03:23:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3534 states. [2020-10-14 03:23:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3534 states to 3534 states and 4624 transitions. [2020-10-14 03:23:40,232 INFO L78 Accepts]: Start accepts. Automaton has 3534 states and 4624 transitions. Word has length 98 [2020-10-14 03:23:40,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:23:40,232 INFO L479 AbstractCegarLoop]: Abstraction has 3534 states and 4624 transitions. [2020-10-14 03:23:40,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:23:40,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3534 states and 4624 transitions. [2020-10-14 03:23:40,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 03:23:40,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:40,234 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:23:40,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:23:40,235 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:40,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:40,235 INFO L82 PathProgramCache]: Analyzing trace with hash -2041176518, now seen corresponding path program 1 times [2020-10-14 03:23:40,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:40,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985238004] [2020-10-14 03:23:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:40,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:40,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:40,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:23:40,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:40,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 03:23:40,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:40,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:40,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:23:40,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:23:40,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 03:23:40,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:40,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:40,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:40,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:40,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:40,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:23:40,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:40,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:40,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:23:40,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:40,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:23:40,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:23:40,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:23:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:40,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:40,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:40,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:23:40,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:40,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 03:23:40,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:40,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:40,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:23:40,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:23:40,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985238004] [2020-10-14 03:23:40,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:23:40,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:23:40,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581933737] [2020-10-14 03:23:40,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:23:40,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:40,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:23:40,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:23:40,702 INFO L87 Difference]: Start difference. First operand 3534 states and 4624 transitions. Second operand 5 states. [2020-10-14 03:23:49,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:23:49,924 INFO L93 Difference]: Finished difference Result 6155 states and 8517 transitions. [2020-10-14 03:23:49,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:23:49,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-14 03:23:49,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:23:49,946 INFO L225 Difference]: With dead ends: 6155 [2020-10-14 03:23:49,947 INFO L226 Difference]: Without dead ends: 4178 [2020-10-14 03:23:49,953 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 03:23:49,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2020-10-14 03:23:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 4159. [2020-10-14 03:23:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4159 states. [2020-10-14 03:23:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4159 states to 4159 states and 5456 transitions. [2020-10-14 03:23:50,055 INFO L78 Accepts]: Start accepts. Automaton has 4159 states and 5456 transitions. Word has length 107 [2020-10-14 03:23:50,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:23:50,056 INFO L479 AbstractCegarLoop]: Abstraction has 4159 states and 5456 transitions. [2020-10-14 03:23:50,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:23:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4159 states and 5456 transitions. [2020-10-14 03:23:50,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 03:23:50,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:50,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:23:50,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:23:50,058 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:50,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:50,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1851193451, now seen corresponding path program 1 times [2020-10-14 03:23:50,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:50,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204501721] [2020-10-14 03:23:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:50,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:50,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:50,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:50,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 03:23:50,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:23:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-14 03:23:50,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:50,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:23:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 03:23:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 03:23:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:51,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:51,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:51,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:51,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:51,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:51,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:23:51,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:51,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:23:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:23:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:51,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:23:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:51,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:51,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:23:51,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:51,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 03:23:51,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:51,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:51,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:51,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:51,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 03:23:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:23:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:23:51,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204501721] [2020-10-14 03:23:51,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:23:51,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:23:51,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081419470] [2020-10-14 03:23:51,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:23:51,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:51,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:23:51,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:23:51,260 INFO L87 Difference]: Start difference. First operand 4159 states and 5456 transitions. Second operand 5 states. [2020-10-14 03:24:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:03,628 INFO L93 Difference]: Finished difference Result 9567 states and 13065 transitions. [2020-10-14 03:24:03,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:03,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-14 03:24:03,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:03,660 INFO L225 Difference]: With dead ends: 9567 [2020-10-14 03:24:03,660 INFO L226 Difference]: Without dead ends: 5721 [2020-10-14 03:24:03,671 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 03:24:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5721 states. [2020-10-14 03:24:03,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5721 to 5715. [2020-10-14 03:24:03,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5715 states. [2020-10-14 03:24:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5715 states to 5715 states and 7769 transitions. [2020-10-14 03:24:03,809 INFO L78 Accepts]: Start accepts. Automaton has 5715 states and 7769 transitions. Word has length 111 [2020-10-14 03:24:03,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:03,810 INFO L479 AbstractCegarLoop]: Abstraction has 5715 states and 7769 transitions. [2020-10-14 03:24:03,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5715 states and 7769 transitions. [2020-10-14 03:24:03,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 03:24:03,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:03,811 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:24:03,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:24:03,812 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:03,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:03,812 INFO L82 PathProgramCache]: Analyzing trace with hash -724599901, now seen corresponding path program 1 times [2020-10-14 03:24:03,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:03,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802447517] [2020-10-14 03:24:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:03,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:04,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:04,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:04,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 03:24:04,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:24:04,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-14 03:24:04,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:04,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:04,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:04,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 03:24:04,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 03:24:04,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:04,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:04,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:04,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:04,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:04,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:04,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:24:04,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:04,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:04,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:04,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:04,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:04,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:04,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:04,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:04,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:24:04,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:04,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 03:24:04,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:04,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:04,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:04,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 03:24:04,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:24:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:04,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802447517] [2020-10-14 03:24:04,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:04,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:04,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541072423] [2020-10-14 03:24:04,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:04,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:04,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:04,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:04,599 INFO L87 Difference]: Start difference. First operand 5715 states and 7769 transitions. Second operand 5 states. [2020-10-14 03:24:12,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:12,442 INFO L93 Difference]: Finished difference Result 10824 states and 15388 transitions. [2020-10-14 03:24:12,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:12,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-14 03:24:12,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:12,491 INFO L225 Difference]: With dead ends: 10824 [2020-10-14 03:24:12,491 INFO L226 Difference]: Without dead ends: 6666 [2020-10-14 03:24:12,504 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 03:24:12,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6666 states. [2020-10-14 03:24:12,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6666 to 6650. [2020-10-14 03:24:12,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6650 states. [2020-10-14 03:24:12,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6650 states to 6650 states and 9049 transitions. [2020-10-14 03:24:12,653 INFO L78 Accepts]: Start accepts. Automaton has 6650 states and 9049 transitions. Word has length 115 [2020-10-14 03:24:12,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:12,654 INFO L479 AbstractCegarLoop]: Abstraction has 6650 states and 9049 transitions. [2020-10-14 03:24:12,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:12,654 INFO L276 IsEmpty]: Start isEmpty. Operand 6650 states and 9049 transitions. [2020-10-14 03:24:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 03:24:12,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:12,656 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:24:12,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:24:12,656 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:12,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:12,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1854971611, now seen corresponding path program 1 times [2020-10-14 03:24:12,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:12,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666723829] [2020-10-14 03:24:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:12,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:12,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:12,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:24:12,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:12,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 03:24:12,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:12,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:24:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:24:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 03:24:12,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:13,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:13,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:13,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:13,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:13,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:24:13,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:13,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:24:13,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:13,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:13,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:13,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:13,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 03:24:13,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:13,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 03:24:13,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:13,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:13,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:13,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:24:13,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 03:24:13,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:13,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666723829] [2020-10-14 03:24:13,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:24:13,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 03:24:13,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434056078] [2020-10-14 03:24:13,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:24:13,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:13,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:24:13,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:24:13,601 INFO L87 Difference]: Start difference. First operand 6650 states and 9049 transitions. Second operand 8 states. [2020-10-14 03:24:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:21,306 INFO L93 Difference]: Finished difference Result 13188 states and 19164 transitions. [2020-10-14 03:24:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:24:21,309 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 119 [2020-10-14 03:24:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:21,354 INFO L225 Difference]: With dead ends: 13188 [2020-10-14 03:24:21,354 INFO L226 Difference]: Without dead ends: 6851 [2020-10-14 03:24:21,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:24:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6851 states. [2020-10-14 03:24:21,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6851 to 6392. [2020-10-14 03:24:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6392 states. [2020-10-14 03:24:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6392 states to 6392 states and 8735 transitions. [2020-10-14 03:24:21,641 INFO L78 Accepts]: Start accepts. Automaton has 6392 states and 8735 transitions. Word has length 119 [2020-10-14 03:24:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:21,642 INFO L479 AbstractCegarLoop]: Abstraction has 6392 states and 8735 transitions. [2020-10-14 03:24:21,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:24:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 6392 states and 8735 transitions. [2020-10-14 03:24:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 03:24:21,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:21,645 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:21,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:24:21,645 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:21,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1320959002, now seen corresponding path program 1 times [2020-10-14 03:24:21,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:21,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822924518] [2020-10-14 03:24:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:21,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:22,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:22,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 03:24:22,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:24:22,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1213 [2020-10-14 03:24:22,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:22,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:22,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:22,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:24:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:24:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:23,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:23,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:23,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:23,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:23,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:24:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:23,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:23,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:23,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:23,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:23,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:23,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:24:23,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 03:24:23,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:23,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:23,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:24:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:23,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:24:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:23,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:23,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:23,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:24:23,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:23,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 03:24:23,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:23,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:24:23,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:24:23,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:24:23,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822924518] [2020-10-14 03:24:23,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:23,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:24:23,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125349300] [2020-10-14 03:24:23,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:24:23,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:23,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:24:23,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:24:23,496 INFO L87 Difference]: Start difference. First operand 6392 states and 8735 transitions. Second operand 7 states. [2020-10-14 03:24:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:36,516 INFO L93 Difference]: Finished difference Result 14142 states and 20831 transitions. [2020-10-14 03:24:36,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:24:36,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-14 03:24:36,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:36,551 INFO L225 Difference]: With dead ends: 14142 [2020-10-14 03:24:36,551 INFO L226 Difference]: Without dead ends: 9307 [2020-10-14 03:24:36,564 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 03:24:36,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9307 states. [2020-10-14 03:24:36,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9307 to 8979. [2020-10-14 03:24:36,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8979 states. [2020-10-14 03:24:36,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8979 states to 8979 states and 12087 transitions. [2020-10-14 03:24:36,779 INFO L78 Accepts]: Start accepts. Automaton has 8979 states and 12087 transitions. Word has length 176 [2020-10-14 03:24:36,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:36,779 INFO L479 AbstractCegarLoop]: Abstraction has 8979 states and 12087 transitions. [2020-10-14 03:24:36,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:24:36,780 INFO L276 IsEmpty]: Start isEmpty. Operand 8979 states and 12087 transitions. [2020-10-14 03:24:36,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 03:24:36,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:36,785 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:36,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:24:36,785 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:36,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:36,786 INFO L82 PathProgramCache]: Analyzing trace with hash 235764451, now seen corresponding path program 1 times [2020-10-14 03:24:36,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:36,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941443477] [2020-10-14 03:24:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:37,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:37,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 03:24:37,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:37,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-14 03:24:37,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:37,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-14 03:24:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 03:24:37,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:37,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:37,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:37,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:37,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:37,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:24:37,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:37,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:37,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:37,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:37,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:37,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:37,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 03:24:37,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:37,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 03:24:37,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:37,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:37,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-14 03:24:37,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:37,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941443477] [2020-10-14 03:24:37,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:37,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:37,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061670562] [2020-10-14 03:24:37,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:37,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:37,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:37,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:37,701 INFO L87 Difference]: Start difference. First operand 8979 states and 12087 transitions. Second operand 5 states. [2020-10-14 03:24:48,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:48,640 INFO L93 Difference]: Finished difference Result 17992 states and 25109 transitions. [2020-10-14 03:24:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:48,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-14 03:24:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:48,692 INFO L225 Difference]: With dead ends: 17992 [2020-10-14 03:24:48,692 INFO L226 Difference]: Without dead ends: 10570 [2020-10-14 03:24:48,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:24:48,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10570 states. [2020-10-14 03:24:48,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10570 to 10551. [2020-10-14 03:24:48,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10551 states. [2020-10-14 03:24:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10551 states to 10551 states and 14246 transitions. [2020-10-14 03:24:49,174 INFO L78 Accepts]: Start accepts. Automaton has 10551 states and 14246 transitions. Word has length 192 [2020-10-14 03:24:49,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:49,175 INFO L479 AbstractCegarLoop]: Abstraction has 10551 states and 14246 transitions. [2020-10-14 03:24:49,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:49,175 INFO L276 IsEmpty]: Start isEmpty. Operand 10551 states and 14246 transitions. [2020-10-14 03:24:49,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-14 03:24:49,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:49,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:49,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:24:49,179 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:49,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:49,180 INFO L82 PathProgramCache]: Analyzing trace with hash -289974002, now seen corresponding path program 1 times [2020-10-14 03:24:49,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:49,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256502491] [2020-10-14 03:24:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:49,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:50,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:51,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:51,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 03:24:51,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:24:51,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2005 [2020-10-14 03:24:51,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:51,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:24:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 03:24:51,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:51,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:51,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:51,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:51,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:51,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:51,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:24:51,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:51,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:51,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:51,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:51,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:51,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:51,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:51,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:24:51,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 03:24:51,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:51,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:24:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:51,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:24:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:51,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:51,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:51,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 03:24:51,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:51,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 03:24:51,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:51,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:24:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 03:24:51,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:24:51,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256502491] [2020-10-14 03:24:51,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:51,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:24:51,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525890491] [2020-10-14 03:24:51,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:24:51,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:51,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:24:51,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:24:51,740 INFO L87 Difference]: Start difference. First operand 10551 states and 14246 transitions. Second operand 7 states. [2020-10-14 03:25:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:02,056 INFO L93 Difference]: Finished difference Result 21771 states and 31132 transitions. [2020-10-14 03:25:02,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:25:02,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-10-14 03:25:02,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:02,093 INFO L225 Difference]: With dead ends: 21771 [2020-10-14 03:25:02,093 INFO L226 Difference]: Without dead ends: 9923 [2020-10-14 03:25:02,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9923 states. [2020-10-14 03:25:02,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9923 to 8016. [2020-10-14 03:25:02,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8016 states. [2020-10-14 03:25:02,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 10021 transitions. [2020-10-14 03:25:02,296 INFO L78 Accepts]: Start accepts. Automaton has 8016 states and 10021 transitions. Word has length 211 [2020-10-14 03:25:02,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:02,296 INFO L479 AbstractCegarLoop]: Abstraction has 8016 states and 10021 transitions. [2020-10-14 03:25:02,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:02,296 INFO L276 IsEmpty]: Start isEmpty. Operand 8016 states and 10021 transitions. [2020-10-14 03:25:02,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-14 03:25:02,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:02,301 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:02,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:25:02,301 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:02,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:02,302 INFO L82 PathProgramCache]: Analyzing trace with hash -414060275, now seen corresponding path program 1 times [2020-10-14 03:25:02,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:02,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324274292] [2020-10-14 03:25:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:02,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:02,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:02,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-14 03:25:02,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:02,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-14 03:25:02,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:02,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-14 03:25:02,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 03:25:02,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:02,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:02,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:02,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:02,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:02,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:02,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:02,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:02,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:02,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:03,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:03,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:03,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 03:25:03,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:03,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 03:25:03,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:03,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:03,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:03,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:03,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-14 03:25:03,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:25:03,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324274292] [2020-10-14 03:25:03,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:03,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:25:03,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524119157] [2020-10-14 03:25:03,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:25:03,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:03,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:25:03,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:25:03,562 INFO L87 Difference]: Start difference. First operand 8016 states and 10021 transitions. Second operand 5 states. [2020-10-14 03:25:14,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:14,748 INFO L93 Difference]: Finished difference Result 18563 states and 23717 transitions. [2020-10-14 03:25:14,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:25:14,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-10-14 03:25:14,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:14,779 INFO L225 Difference]: With dead ends: 18563 [2020-10-14 03:25:14,779 INFO L226 Difference]: Without dead ends: 10533 [2020-10-14 03:25:14,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:25:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10533 states. [2020-10-14 03:25:14,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10533 to 10206. [2020-10-14 03:25:14,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10206 states. [2020-10-14 03:25:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10206 states to 10206 states and 12512 transitions. [2020-10-14 03:25:14,992 INFO L78 Accepts]: Start accepts. Automaton has 10206 states and 12512 transitions. Word has length 249 [2020-10-14 03:25:14,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:14,993 INFO L479 AbstractCegarLoop]: Abstraction has 10206 states and 12512 transitions. [2020-10-14 03:25:14,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:25:14,993 INFO L276 IsEmpty]: Start isEmpty. Operand 10206 states and 12512 transitions. [2020-10-14 03:25:14,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-14 03:25:15,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:15,000 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:25:15,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:25:15,001 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:15,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:15,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1705983679, now seen corresponding path program 1 times [2020-10-14 03:25:15,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:15,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815509684] [2020-10-14 03:25:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:16,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:16,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-14 03:25:16,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:16,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-10-14 03:25:16,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:16,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:16,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:25:16,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 03:25:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:25:16,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:16,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:16,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:16,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:16,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:16,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:25:16,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:16,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:16,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:16,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:16,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:16,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:25:16,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:16,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 03:25:16,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:16,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:16,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 03:25:16,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:16,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:25:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:17,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:17,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:17,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:25:17,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:17,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 03:25:17,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:17,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:17,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:25:17,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:17,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:25:17,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 73 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:17,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815509684] [2020-10-14 03:25:17,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:17,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:25:17,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678735045] [2020-10-14 03:25:17,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:25:17,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:17,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:25:17,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:25:17,395 INFO L87 Difference]: Start difference. First operand 10206 states and 12512 transitions. Second operand 8 states. [2020-10-14 03:25:36,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:36,609 INFO L93 Difference]: Finished difference Result 28911 states and 36865 transitions. [2020-10-14 03:25:36,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:25:36,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 367 [2020-10-14 03:25:36,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:36,658 INFO L225 Difference]: With dead ends: 28911 [2020-10-14 03:25:36,659 INFO L226 Difference]: Without dead ends: 18997 [2020-10-14 03:25:36,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:25:36,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18997 states. [2020-10-14 03:25:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18997 to 17716. [2020-10-14 03:25:37,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17716 states. [2020-10-14 03:25:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17716 states to 17716 states and 22350 transitions. [2020-10-14 03:25:37,038 INFO L78 Accepts]: Start accepts. Automaton has 17716 states and 22350 transitions. Word has length 367 [2020-10-14 03:25:37,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:37,039 INFO L479 AbstractCegarLoop]: Abstraction has 17716 states and 22350 transitions. [2020-10-14 03:25:37,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:25:37,039 INFO L276 IsEmpty]: Start isEmpty. Operand 17716 states and 22350 transitions. [2020-10-14 03:25:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-14 03:25:37,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:37,049 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:25:37,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:25:37,050 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:37,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1126446020, now seen corresponding path program 1 times [2020-10-14 03:25:37,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:37,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096600900] [2020-10-14 03:25:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:37,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:37,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:39,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:39,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-14 03:25:39,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:25:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1859 [2020-10-14 03:25:39,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:39,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 03:25:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:25:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:39,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:39,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:39,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:39,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:39,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:39,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:39,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:39,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:39,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:25:39,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:39,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 03:25:39,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:39,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:39,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 03:25:39,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:39,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:25:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:39,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:39,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:39,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 03:25:39,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 03:25:39,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:39,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:39,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 03:25:39,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:40,199 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 03:25:40,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096600900] [2020-10-14 03:25:40,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:40,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:40,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755291249] [2020-10-14 03:25:40,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:40,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:40,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:40,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:40,203 INFO L87 Difference]: Start difference. First operand 17716 states and 22350 transitions. Second operand 7 states. [2020-10-14 03:25:56,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:56,073 INFO L93 Difference]: Finished difference Result 39747 states and 56932 transitions. [2020-10-14 03:25:56,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:25:56,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 407 [2020-10-14 03:25:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:56,219 INFO L225 Difference]: With dead ends: 39747 [2020-10-14 03:25:56,219 INFO L226 Difference]: Without dead ends: 22653 [2020-10-14 03:25:56,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:56,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22653 states. [2020-10-14 03:25:56,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22653 to 21465. [2020-10-14 03:25:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21465 states. [2020-10-14 03:25:56,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21465 states to 21465 states and 26371 transitions. [2020-10-14 03:25:56,971 INFO L78 Accepts]: Start accepts. Automaton has 21465 states and 26371 transitions. Word has length 407 [2020-10-14 03:25:56,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:56,972 INFO L479 AbstractCegarLoop]: Abstraction has 21465 states and 26371 transitions. [2020-10-14 03:25:56,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 21465 states and 26371 transitions. [2020-10-14 03:25:57,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-14 03:25:57,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:57,163 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:25:57,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:25:57,163 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:57,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:57,164 INFO L82 PathProgramCache]: Analyzing trace with hash -354458666, now seen corresponding path program 1 times [2020-10-14 03:25:57,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:57,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407149671] [2020-10-14 03:25:57,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:57,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:57,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:58,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:59,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:02,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:02,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:02,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-14 03:26:02,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:26:02,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5229 [2020-10-14 03:26:02,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:02,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:02,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:02,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-14 03:26:02,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:26:02,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:26:02,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:02,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:02,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:02,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:02,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:26:02,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:02,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:02,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:02,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:02,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:03,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:03,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 03:26:03,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:03,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-14 03:26:03,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:03,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:03,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:03,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-14 03:26:03,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:03,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-14 03:26:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:03,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:04,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:04,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:26:04,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:04,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-14 03:26:04,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:04,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:04,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:04,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:26:04,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:04,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-14 03:26:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:04,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:04,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:04,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:26:04,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:04,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 03:26:04,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:04,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:04,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 03:26:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:04,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 127 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 03:26:04,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407149671] [2020-10-14 03:26:04,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:04,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:04,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530831883] [2020-10-14 03:26:04,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:04,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:04,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:04,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:04,390 INFO L87 Difference]: Start difference. First operand 21465 states and 26371 transitions. Second operand 7 states. [2020-10-14 03:26:16,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:16,608 INFO L93 Difference]: Finished difference Result 40497 states and 50072 transitions. [2020-10-14 03:26:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:26:16,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 429 [2020-10-14 03:26:16,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:16,653 INFO L225 Difference]: With dead ends: 40497 [2020-10-14 03:26:16,653 INFO L226 Difference]: Without dead ends: 22136 [2020-10-14 03:26:16,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:16,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22136 states. [2020-10-14 03:26:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22136 to 21495. [2020-10-14 03:26:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21495 states. [2020-10-14 03:26:17,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21495 states to 21495 states and 25077 transitions. [2020-10-14 03:26:17,186 INFO L78 Accepts]: Start accepts. Automaton has 21495 states and 25077 transitions. Word has length 429 [2020-10-14 03:26:17,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:17,187 INFO L479 AbstractCegarLoop]: Abstraction has 21495 states and 25077 transitions. [2020-10-14 03:26:17,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:17,187 INFO L276 IsEmpty]: Start isEmpty. Operand 21495 states and 25077 transitions. [2020-10-14 03:26:17,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-14 03:26:17,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:17,193 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:26:17,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 03:26:17,194 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:17,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:17,194 INFO L82 PathProgramCache]: Analyzing trace with hash 741695540, now seen corresponding path program 1 times [2020-10-14 03:26:17,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:17,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858516570] [2020-10-14 03:26:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:17,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:17,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:22,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:22,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-14 03:26:22,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:26:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 03:26:22,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:22,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:26:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:26:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:22,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:22,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:22,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:22,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:22,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:22,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:22,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:22,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:22,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:22,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:22,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:22,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:22,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:22,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:22,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:26:22,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:22,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 03:26:22,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:22,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:22,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:22,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:22,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:26:22,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:22,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:26:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:22,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:23,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:23,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:26:23,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 03:26:23,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:23,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:26:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 03:26:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:23,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:23,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:23,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:26:23,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:23,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 03:26:23,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:23,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 03:26:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:23,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 127 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 03:26:23,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858516570] [2020-10-14 03:26:23,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:23,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:23,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171230659] [2020-10-14 03:26:23,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:23,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:23,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:23,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:23,555 INFO L87 Difference]: Start difference. First operand 21495 states and 25077 transitions. Second operand 7 states.