/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:39:34,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:39:34,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:39:34,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:39:34,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:39:34,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:39:34,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:39:34,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:39:34,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:39:34,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:39:34,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:39:34,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:39:34,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:39:34,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:39:34,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:39:34,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:39:34,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:39:34,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:39:34,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:39:34,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:39:34,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:39:34,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:39:34,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:39:34,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:39:34,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:39:34,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:39:34,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:39:34,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:39:34,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:39:34,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:39:34,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:39:34,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:39:34,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:39:34,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:39:34,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:39:34,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:39:34,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:39:34,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:39:34,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:39:34,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:39:34,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:39:34,936 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 [2020-10-12 14:39:34,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:39:34,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:39:34,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:39:34,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:39:34,960 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:39:34,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:39:34,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:39:34,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:39:34,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:39:34,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:39:34,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:39:34,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:39:34,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:39:34,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:39:34,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:39:34,962 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:39:34,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:39:34,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:39:34,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:39:34,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:39:34,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:39:34,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:39:34,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:39:34,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:39:34,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:39:34,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:39:34,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:39:34,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:39:34,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:39:34,965 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:39:35,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:39:35,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:39:35,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:39:35,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:39:35,280 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:39:35,280 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label12.c [2020-10-12 14:39:35,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc34d99a0/4e706dd0e76e479e93068bec4608d791/FLAGfdd08c30f [2020-10-12 14:39:36,081 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:39:36,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label12.c [2020-10-12 14:39:36,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc34d99a0/4e706dd0e76e479e93068bec4608d791/FLAGfdd08c30f [2020-10-12 14:39:36,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc34d99a0/4e706dd0e76e479e93068bec4608d791 [2020-10-12 14:39:36,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:39:36,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:39:36,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:39:36,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:39:36,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:39:36,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:39:36" (1/1) ... [2020-10-12 14:39:36,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edca977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:36, skipping insertion in model container [2020-10-12 14:39:36,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:39:36" (1/1) ... [2020-10-12 14:39:36,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:39:36,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:39:37,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:39:37,315 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:39:37,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:39:37,738 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:39:37,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:37 WrapperNode [2020-10-12 14:39:37,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:39:37,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:39:37,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:39:37,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:39:37,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:37" (1/1) ... [2020-10-12 14:39:37,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:37" (1/1) ... [2020-10-12 14:39:37,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:37" (1/1) ... [2020-10-12 14:39:37,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:37" (1/1) ... [2020-10-12 14:39:37,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:37" (1/1) ... [2020-10-12 14:39:37,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:37" (1/1) ... [2020-10-12 14:39:37,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:37" (1/1) ... [2020-10-12 14:39:37,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:39:37,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:39:37,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:39:37,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:39:38,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:37" (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 [2020-10-12 14:39:38,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:39:38,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:39:38,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:39:38,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:39:38,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:39:38,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:39:38,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:39:38,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:39:38,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:39:38,069 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:39:38,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:39:38,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:39:38,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:39:46,871 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:39:46,872 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:39:46,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:39:46 BoogieIcfgContainer [2020-10-12 14:39:46,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:39:46,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:39:46,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:39:46,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:39:46,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:39:36" (1/3) ... [2020-10-12 14:39:46,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b52d081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:39:46, skipping insertion in model container [2020-10-12 14:39:46,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:39:37" (2/3) ... [2020-10-12 14:39:46,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b52d081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:39:46, skipping insertion in model container [2020-10-12 14:39:46,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:39:46" (3/3) ... [2020-10-12 14:39:46,898 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label12.c [2020-10-12 14:39:46,909 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:39:46,921 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:39:46,936 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:39:46,967 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:39:46,968 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:39:46,968 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:39:46,968 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:39:46,968 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:39:46,968 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:39:46,968 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:39:46,969 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:39:47,004 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-12 14:39:47,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 14:39:47,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:39:47,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:39:47,016 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:39:47,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:39:47,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1305319639, now seen corresponding path program 1 times [2020-10-12 14:39:47,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:39:47,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232102442] [2020-10-12 14:39:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:39:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:47,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:47,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:47,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 14:39:47,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:47,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-10-12 14:39:47,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:39:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:39:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 14:39:47,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:39:47,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:39:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:47,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:47,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:47,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:39:47,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:47,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:39:47,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:39:47,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:47,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:39:47,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:39:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:39:47,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232102442] [2020-10-12 14:39:47,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:39:47,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 14:39:47,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959773303] [2020-10-12 14:39:47,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:39:47,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:39:47,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:39:47,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:39:47,796 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 5 states. [2020-10-12 14:40:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:03,167 INFO L93 Difference]: Finished difference Result 2167 states and 4005 transitions. [2020-10-12 14:40:03,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:40:03,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-12 14:40:03,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:03,201 INFO L225 Difference]: With dead ends: 2167 [2020-10-12 14:40:03,201 INFO L226 Difference]: Without dead ends: 1470 [2020-10-12 14:40:03,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:40:03,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2020-10-12 14:40:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1450. [2020-10-12 14:40:03,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2020-10-12 14:40:03,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2031 transitions. [2020-10-12 14:40:03,363 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2031 transitions. Word has length 39 [2020-10-12 14:40:03,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:03,365 INFO L479 AbstractCegarLoop]: Abstraction has 1450 states and 2031 transitions. [2020-10-12 14:40:03,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:40:03,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2031 transitions. [2020-10-12 14:40:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 14:40:03,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:03,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:40:03,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:40:03,375 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:03,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:03,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1368383281, now seen corresponding path program 1 times [2020-10-12 14:40:03,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:03,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723649540] [2020-10-12 14:40:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:03,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:03,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:04,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:04,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 14:40:04,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:40:04,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-10-12 14:40:04,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:40:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:40:04,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 14:40:04,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:04,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:40:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:04,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:04,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:04,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:40:04,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:04,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:40:04,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:40:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:40:04,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:04,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:40:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:04,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:04,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:04,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 14:40:04,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-12 14:40:04,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:40:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:40:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:40:04,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:40:04,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723649540] [2020-10-12 14:40:04,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:40:04,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:40:04,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695804401] [2020-10-12 14:40:04,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:40:04,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:40:04,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:40:04,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:40:04,840 INFO L87 Difference]: Start difference. First operand 1450 states and 2031 transitions. Second operand 8 states. [2020-10-12 14:40:22,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:22,114 INFO L93 Difference]: Finished difference Result 3913 states and 5603 transitions. [2020-10-12 14:40:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:40:22,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-10-12 14:40:22,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:22,135 INFO L225 Difference]: With dead ends: 3913 [2020-10-12 14:40:22,135 INFO L226 Difference]: Without dead ends: 2426 [2020-10-12 14:40:22,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:40:22,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2020-10-12 14:40:22,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 2368. [2020-10-12 14:40:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2368 states. [2020-10-12 14:40:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 3297 transitions. [2020-10-12 14:40:22,223 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 3297 transitions. Word has length 113 [2020-10-12 14:40:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:22,226 INFO L479 AbstractCegarLoop]: Abstraction has 2368 states and 3297 transitions. [2020-10-12 14:40:22,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:40:22,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 3297 transitions. [2020-10-12 14:40:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 14:40:22,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:22,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:40:22,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:40:22,238 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:22,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1227409727, now seen corresponding path program 1 times [2020-10-12 14:40:22,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:22,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669082992] [2020-10-12 14:40:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:22,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:22,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 14:40:22,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:22,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-12 14:40:22,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:22,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:40:22,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:40:22,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 14:40:22,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:22,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:40:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:22,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:22,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:22,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:40:22,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:22,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:40:22,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:22,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:40:22,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:22,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:40:22,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:22,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:40:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:22,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:22,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:22,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:40:22,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:22,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 14:40:22,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:40:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:40:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:40:22,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669082992] [2020-10-12 14:40:22,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:40:22,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:40:22,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366261630] [2020-10-12 14:40:22,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:40:22,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:40:22,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:40:22,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:40:22,989 INFO L87 Difference]: Start difference. First operand 2368 states and 3297 transitions. Second operand 5 states. [2020-10-12 14:40:32,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:32,877 INFO L93 Difference]: Finished difference Result 7016 states and 9859 transitions. [2020-10-12 14:40:32,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:40:32,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-12 14:40:32,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:32,913 INFO L225 Difference]: With dead ends: 7016 [2020-10-12 14:40:32,913 INFO L226 Difference]: Without dead ends: 4654 [2020-10-12 14:40:32,920 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 [2020-10-12 14:40:32,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2020-10-12 14:40:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 4640. [2020-10-12 14:40:33,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4640 states. [2020-10-12 14:40:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 6006 transitions. [2020-10-12 14:40:33,037 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 6006 transitions. Word has length 126 [2020-10-12 14:40:33,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:33,038 INFO L479 AbstractCegarLoop]: Abstraction has 4640 states and 6006 transitions. [2020-10-12 14:40:33,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:40:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 6006 transitions. [2020-10-12 14:40:33,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-12 14:40:33,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:33,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:40:33,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:40:33,041 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:33,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:33,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1430391076, now seen corresponding path program 1 times [2020-10-12 14:40:33,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:33,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409359941] [2020-10-12 14:40:33,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:33,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:33,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:33,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:34,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:35,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:35,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 14:40:35,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:40:35,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1969 [2020-10-12 14:40:35,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:35,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:40:35,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:40:35,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 14:40:35,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:35,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:40:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:35,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:35,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:35,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:40:35,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:40:35,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:40:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:40:35,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:35,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:40:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:35,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:35,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:35,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 14:40:35,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:40:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-12 14:40:35,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:35,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:40:35,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:40:35,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 14:40:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:40:35,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409359941] [2020-10-12 14:40:35,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:40:35,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:40:35,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823531467] [2020-10-12 14:40:35,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:40:35,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:40:35,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:40:35,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:40:35,600 INFO L87 Difference]: Start difference. First operand 4640 states and 6006 transitions. Second operand 7 states. [2020-10-12 14:40:48,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:48,045 INFO L93 Difference]: Finished difference Result 10636 states and 14345 transitions. [2020-10-12 14:40:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:40:48,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-12 14:40:48,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:48,070 INFO L225 Difference]: With dead ends: 10636 [2020-10-12 14:40:48,071 INFO L226 Difference]: Without dead ends: 4667 [2020-10-12 14:40:48,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:40:48,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2020-10-12 14:40:48,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 4631. [2020-10-12 14:40:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4631 states. [2020-10-12 14:40:48,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4631 states to 4631 states and 5630 transitions. [2020-10-12 14:40:48,199 INFO L78 Accepts]: Start accepts. Automaton has 4631 states and 5630 transitions. Word has length 135 [2020-10-12 14:40:48,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:48,200 INFO L479 AbstractCegarLoop]: Abstraction has 4631 states and 5630 transitions. [2020-10-12 14:40:48,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:40:48,200 INFO L276 IsEmpty]: Start isEmpty. Operand 4631 states and 5630 transitions. [2020-10-12 14:40:48,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-12 14:40:48,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:48,204 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:40:48,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:40:48,205 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:48,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1675491827, now seen corresponding path program 1 times [2020-10-12 14:40:48,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:48,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980157213] [2020-10-12 14:40:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:48,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:48,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:49,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:49,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-12 14:40:49,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:40:49,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-10-12 14:40:49,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:40:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-12 14:40:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 14:40:49,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:49,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:40:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:49,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:49,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:49,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:40:49,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:49,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:40:49,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:40:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:40:49,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:49,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:40:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:49,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:49,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:49,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:40:49,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:49,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 14:40:49,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:40:49,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:49,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:40:49,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:49,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:40:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:49,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:49,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:49,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 14:40:49,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:49,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 14:40:49,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:40:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 14:40:49,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 14:40:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 14:40:49,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980157213] [2020-10-12 14:40:49,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:40:49,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:40:49,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268373272] [2020-10-12 14:40:49,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:40:49,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:40:49,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:40:49,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:40:49,586 INFO L87 Difference]: Start difference. First operand 4631 states and 5630 transitions. Second operand 5 states. [2020-10-12 14:40:57,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:57,691 INFO L93 Difference]: Finished difference Result 11028 states and 14003 transitions. [2020-10-12 14:40:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:40:57,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-12 14:40:57,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:57,728 INFO L225 Difference]: With dead ends: 11028 [2020-10-12 14:40:57,729 INFO L226 Difference]: Without dead ends: 6836 [2020-10-12 14:40:57,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:40:57,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6836 states. [2020-10-12 14:40:57,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6836 to 6834. [2020-10-12 14:40:57,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6834 states. [2020-10-12 14:40:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6834 states to 6834 states and 8328 transitions. [2020-10-12 14:40:57,955 INFO L78 Accepts]: Start accepts. Automaton has 6834 states and 8328 transitions. Word has length 199 [2020-10-12 14:40:57,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:57,956 INFO L479 AbstractCegarLoop]: Abstraction has 6834 states and 8328 transitions. [2020-10-12 14:40:57,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:40:57,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6834 states and 8328 transitions. [2020-10-12 14:40:57,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-12 14:40:57,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:57,960 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:40:57,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:40:57,961 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:57,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:57,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1309783215, now seen corresponding path program 1 times [2020-10-12 14:40:57,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:57,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077757358] [2020-10-12 14:40:57,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:58,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:58,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:00,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:01,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:01,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-12 14:41:01,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:41:01,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3422 [2020-10-12 14:41:01,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:01,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:41:01,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:41:01,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-12 14:41:01,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:01,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:41:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:01,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:01,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:41:01,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:01,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:41:01,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:01,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:41:01,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:01,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:41:01,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:41:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:01,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:01,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:41:01,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:01,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-12 14:41:01,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:01,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:41:01,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:41:01,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:01,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:41:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:01,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:02,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:02,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:41:02,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:02,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 14:41:02,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:02,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:02,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 14:41:02,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 68 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:41:02,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077757358] [2020-10-12 14:41:02,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:41:02,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:41:02,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877251792] [2020-10-12 14:41:02,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:41:02,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:41:02,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:41:02,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:41:02,392 INFO L87 Difference]: Start difference. First operand 6834 states and 8328 transitions. Second operand 10 states. [2020-10-12 14:41:26,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:41:26,083 INFO L93 Difference]: Finished difference Result 18363 states and 22932 transitions. [2020-10-12 14:41:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 14:41:26,086 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 201 [2020-10-12 14:41:26,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:41:26,136 INFO L225 Difference]: With dead ends: 18363 [2020-10-12 14:41:26,136 INFO L226 Difference]: Without dead ends: 11968 [2020-10-12 14:41:26,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-10-12 14:41:26,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11968 states. [2020-10-12 14:41:26,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11968 to 11878. [2020-10-12 14:41:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11878 states. [2020-10-12 14:41:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11878 states to 11878 states and 14563 transitions. [2020-10-12 14:41:26,436 INFO L78 Accepts]: Start accepts. Automaton has 11878 states and 14563 transitions. Word has length 201 [2020-10-12 14:41:26,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:41:26,437 INFO L479 AbstractCegarLoop]: Abstraction has 11878 states and 14563 transitions. [2020-10-12 14:41:26,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:41:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 11878 states and 14563 transitions. [2020-10-12 14:41:26,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-12 14:41:26,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:41:26,444 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:41:26,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:41:26,444 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:41:26,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:41:26,445 INFO L82 PathProgramCache]: Analyzing trace with hash 101892322, now seen corresponding path program 1 times [2020-10-12 14:41:26,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:41:26,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981262118] [2020-10-12 14:41:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:41:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:27,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:28,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:28,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-12 14:41:28,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:41:28,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1648 [2020-10-12 14:41:28,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-12 14:41:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 14:41:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:41:28,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:41:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:28,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:28,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:28,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:41:28,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:28,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:41:28,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:28,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:28,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:41:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:28,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:28,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:28,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:41:28,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:28,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 14:41:28,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:28,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:28,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:28,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:28,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:28,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:41:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:28,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:28,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:28,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:41:28,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-12 14:41:28,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:41:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:41:28,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:41:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:28,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:28,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:28,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:41:28,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:28,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 14:41:28,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:28,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:28,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:28,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:41:28,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-12 14:41:28,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981262118] [2020-10-12 14:41:28,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:41:28,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:41:28,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829787624] [2020-10-12 14:41:28,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:41:28,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:41:28,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:41:28,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:41:28,876 INFO L87 Difference]: Start difference. First operand 11878 states and 14563 transitions. Second operand 7 states. [2020-10-12 14:41:46,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:41:46,087 INFO L93 Difference]: Finished difference Result 29775 states and 37722 transitions. [2020-10-12 14:41:46,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:41:46,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-10-12 14:41:46,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:41:46,142 INFO L225 Difference]: With dead ends: 29775 [2020-10-12 14:41:46,142 INFO L226 Difference]: Without dead ends: 15964 [2020-10-12 14:41:46,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:41:46,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15964 states. [2020-10-12 14:41:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15964 to 15024. [2020-10-12 14:41:46,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15024 states. [2020-10-12 14:41:46,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15024 states to 15024 states and 18483 transitions. [2020-10-12 14:41:46,492 INFO L78 Accepts]: Start accepts. Automaton has 15024 states and 18483 transitions. Word has length 283 [2020-10-12 14:41:46,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:41:46,493 INFO L479 AbstractCegarLoop]: Abstraction has 15024 states and 18483 transitions. [2020-10-12 14:41:46,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:41:46,493 INFO L276 IsEmpty]: Start isEmpty. Operand 15024 states and 18483 transitions. [2020-10-12 14:41:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-12 14:41:46,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:41:46,501 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:41:46,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:41:46,501 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:41:46,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:41:46,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1447546444, now seen corresponding path program 1 times [2020-10-12 14:41:46,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:41:46,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611591840] [2020-10-12 14:41:46,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:41:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:46,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:46,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:49,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:51,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:51,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 14:41:51,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:41:51,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4842 [2020-10-12 14:41:51,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:41:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-12 14:41:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 14:41:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:51,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:41:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:51,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:51,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:51,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:41:51,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:51,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:41:51,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:51,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:51,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:51,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:51,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:51,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:41:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:51,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:51,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:51,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:41:51,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:51,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 14:41:51,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:51,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:51,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:51,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:51,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:51,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:41:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:51,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:51,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:51,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:41:51,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 14:41:51,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:41:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 14:41:51,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:51,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:41:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:52,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:52,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:41:52,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:41:52,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 14:41:52,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:52,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:41:52,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 202 proven. 33 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 14:41:52,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611591840] [2020-10-12 14:41:52,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:41:52,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:41:52,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647041777] [2020-10-12 14:41:52,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:41:52,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:41:52,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:41:52,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:41:52,164 INFO L87 Difference]: Start difference. First operand 15024 states and 18483 transitions. Second operand 7 states. [2020-10-12 14:42:10,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:42:10,284 INFO L93 Difference]: Finished difference Result 37353 states and 47667 transitions. [2020-10-12 14:42:10,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:42:10,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-12 14:42:10,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:42:10,376 INFO L225 Difference]: With dead ends: 37353 [2020-10-12 14:42:10,377 INFO L226 Difference]: Without dead ends: 22768 [2020-10-12 14:42:10,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:42:10,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22768 states. [2020-10-12 14:42:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22768 to 21420. [2020-10-12 14:42:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21420 states. [2020-10-12 14:42:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21420 states to 21420 states and 27489 transitions. [2020-10-12 14:42:10,923 INFO L78 Accepts]: Start accepts. Automaton has 21420 states and 27489 transitions. Word has length 306 [2020-10-12 14:42:10,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:42:10,924 INFO L479 AbstractCegarLoop]: Abstraction has 21420 states and 27489 transitions. [2020-10-12 14:42:10,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:42:10,925 INFO L276 IsEmpty]: Start isEmpty. Operand 21420 states and 27489 transitions. [2020-10-12 14:42:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-12 14:42:10,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:42:10,934 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:42:10,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:42:10,935 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:42:10,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:42:10,935 INFO L82 PathProgramCache]: Analyzing trace with hash -313616024, now seen corresponding path program 1 times [2020-10-12 14:42:10,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:42:10,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592933279] [2020-10-12 14:42:10,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:42:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:11,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:12,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:14,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:14,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-12 14:42:14,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:42:14,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3536 [2020-10-12 14:42:14,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:14,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:42:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:42:14,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:42:14,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:14,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:42:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:14,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:14,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:42:14,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:14,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:42:14,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:14,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:42:14,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:42:14,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:42:14,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:42:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:14,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:14,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:14,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:42:14,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:14,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 14:42:14,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:42:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:42:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:42:14,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:14,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:42:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:14,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:15,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:15,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:42:15,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:15,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-12 14:42:15,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:42:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:42:15,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 14:42:15,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:42:15,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:42:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:15,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:15,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:42:15,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:15,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 14:42:15,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:42:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-12 14:42:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:42:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 184 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-12 14:42:15,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592933279] [2020-10-12 14:42:15,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:42:15,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:42:15,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446544902] [2020-10-12 14:42:15,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:42:15,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:42:15,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:42:15,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:42:15,555 INFO L87 Difference]: Start difference. First operand 21420 states and 27489 transitions. Second operand 7 states. [2020-10-12 14:42:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:42:27,694 INFO L93 Difference]: Finished difference Result 46473 states and 59492 transitions. [2020-10-12 14:42:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:42:27,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-12 14:42:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:42:27,765 INFO L225 Difference]: With dead ends: 46473 [2020-10-12 14:42:27,766 INFO L226 Difference]: Without dead ends: 25059 [2020-10-12 14:42:27,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:42:27,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25059 states. [2020-10-12 14:42:28,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25059 to 25026. [2020-10-12 14:42:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25026 states. [2020-10-12 14:42:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25026 states to 25026 states and 31809 transitions. [2020-10-12 14:42:28,245 INFO L78 Accepts]: Start accepts. Automaton has 25026 states and 31809 transitions. Word has length 311 [2020-10-12 14:42:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:42:28,245 INFO L479 AbstractCegarLoop]: Abstraction has 25026 states and 31809 transitions. [2020-10-12 14:42:28,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:42:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 25026 states and 31809 transitions. [2020-10-12 14:42:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-12 14:42:28,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:42:28,254 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:42:28,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:42:28,255 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:42:28,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:42:28,255 INFO L82 PathProgramCache]: Analyzing trace with hash 937359354, now seen corresponding path program 1 times [2020-10-12 14:42:28,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:42:28,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838879585] [2020-10-12 14:42:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:42:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:28,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:28,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:30,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:33,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:33,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-12 14:42:33,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:42:33,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 14:42:33,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:42:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:42:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-12 14:42:33,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:33,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:42:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:33,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:33,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:33,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:42:33,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:33,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:42:33,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:42:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:42:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:42:33,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:33,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:42:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:33,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:33,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:33,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:42:33,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:33,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 14:42:33,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:33,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:42:33,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:42:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:42:33,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:33,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:42:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:33,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:33,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:33,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 14:42:33,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:33,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 14:42:33,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:42:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:42:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 14:42:33,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:33,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-12 14:42:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:42:33,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:42:33,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:42:33,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-12 14:42:33,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:42:33,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 14:42:33,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:42:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:42:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 14:42:33,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:42:33,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:42:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 104 proven. 228 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 14:42:33,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838879585] [2020-10-12 14:42:33,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:42:33,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 14:42:33,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051266027] [2020-10-12 14:42:33,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:42:33,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:42:33,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:42:33,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:42:33,962 INFO L87 Difference]: Start difference. First operand 25026 states and 31809 transitions. Second operand 10 states. [2020-10-12 14:42:58,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:42:58,850 INFO L93 Difference]: Finished difference Result 71550 states and 96027 transitions. [2020-10-12 14:42:58,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 14:42:58,852 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 345 [2020-10-12 14:42:58,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:42:59,014 INFO L225 Difference]: With dead ends: 71550 [2020-10-12 14:42:59,014 INFO L226 Difference]: Without dead ends: 46530 [2020-10-12 14:42:59,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-12 14:42:59,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46530 states. [2020-10-12 14:42:59,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46530 to 45404. [2020-10-12 14:42:59,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45404 states. [2020-10-12 14:43:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45404 states to 45404 states and 56950 transitions. [2020-10-12 14:43:00,029 INFO L78 Accepts]: Start accepts. Automaton has 45404 states and 56950 transitions. Word has length 345 [2020-10-12 14:43:00,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:43:00,029 INFO L479 AbstractCegarLoop]: Abstraction has 45404 states and 56950 transitions. [2020-10-12 14:43:00,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:43:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand 45404 states and 56950 transitions. [2020-10-12 14:43:00,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-12 14:43:00,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:43:00,039 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:43:00,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:43:00,039 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:43:00,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:43:00,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1678516835, now seen corresponding path program 1 times [2020-10-12 14:43:00,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:43:00,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382153664] [2020-10-12 14:43:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:43:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:00,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:01,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:02,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:03,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:03,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-12 14:43:03,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:43:03,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3670 [2020-10-12 14:43:03,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:43:03,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:43:03,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 324 [2020-10-12 14:43:03,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:03,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:43:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:03,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:03,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:03,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:43:03,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:43:03,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:43:03,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:43:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:43:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:43:03,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:03,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:43:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:04,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:04,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:43:04,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:43:04,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 14:43:04,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:04,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:43:04,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:43:04,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:43:04,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:04,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:43:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:04,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:04,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:04,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:43:04,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:43:04,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 14:43:04,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:43:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:43:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:43:04,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:04,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:43:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:43:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:43:04,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:43:04,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-12 14:43:04,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:43:04,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 14:43:04,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:43:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:43:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:43:04,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-12 14:43:04,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:43:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 263 proven. 6 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 14:43:04,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382153664] [2020-10-12 14:43:04,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:43:04,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:43:04,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143543707] [2020-10-12 14:43:04,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:43:04,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:43:04,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:43:04,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:43:04,474 INFO L87 Difference]: Start difference. First operand 45404 states and 56950 transitions. Second operand 10 states. [2020-10-12 14:43:31,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:43:31,769 INFO L93 Difference]: Finished difference Result 120584 states and 156984 transitions. [2020-10-12 14:43:31,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 14:43:31,772 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 353 [2020-10-12 14:43:31,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:43:32,022 INFO L225 Difference]: With dead ends: 120584 [2020-10-12 14:43:32,022 INFO L226 Difference]: Without dead ends: 75184 [2020-10-12 14:43:32,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-12 14:43:32,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75184 states.