/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2c_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:05:32,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:05:32,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:05:32,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:05:32,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:05:32,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:05:32,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:05:32,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:05:32,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:05:32,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:05:32,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:05:32,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:05:32,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:05:32,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:05:32,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:05:32,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:05:32,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:05:32,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:05:32,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:05:32,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:05:32,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:05:32,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:05:32,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:05:32,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:05:33,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:05:33,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:05:33,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:05:33,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:05:33,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:05:33,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:05:33,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:05:33,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:05:33,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:05:33,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:05:33,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:05:33,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:05:33,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:05:33,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:05:33,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:05:33,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:05:33,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:05:33,021 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 05:05:33,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:05:33,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:05:33,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:05:33,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:05:33,063 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:05:33,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:05:33,064 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:05:33,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:05:33,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:05:33,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:05:33,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:05:33,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:05:33,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:05:33,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:05:33,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:05:33,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:05:33,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:05:33,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:05:33,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:05:33,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:05:33,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:05:33,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:05:33,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:05:33,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:05:33,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:05:33,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:05:33,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:05:33,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:05:33,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:05:33,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:05:33,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:05:33,388 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:05:33,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:05:33,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:05:33,394 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:05:33,395 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_prepend_unequal.i [2020-10-14 05:05:33,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d8547e01/611e34e007a343ae94db389baa51c09d/FLAG557f864e6 [2020-10-14 05:05:33,941 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:05:33,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_prepend_unequal.i [2020-10-14 05:05:33,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d8547e01/611e34e007a343ae94db389baa51c09d/FLAG557f864e6 [2020-10-14 05:05:34,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d8547e01/611e34e007a343ae94db389baa51c09d [2020-10-14 05:05:34,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:05:34,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:05:34,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:05:34,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:05:34,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:05:34,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:05:34" (1/1) ... [2020-10-14 05:05:34,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c55f182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:34, skipping insertion in model container [2020-10-14 05:05:34,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:05:34" (1/1) ... [2020-10-14 05:05:34,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:05:34,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:05:34,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:05:34,735 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:05:34,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:05:34,864 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:05:34,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:34 WrapperNode [2020-10-14 05:05:34,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:05:34,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:05:34,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:05:34,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:05:34,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:34" (1/1) ... [2020-10-14 05:05:34,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:34" (1/1) ... [2020-10-14 05:05:34,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:34" (1/1) ... [2020-10-14 05:05:34,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:34" (1/1) ... [2020-10-14 05:05:34,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:34" (1/1) ... [2020-10-14 05:05:34,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:34" (1/1) ... [2020-10-14 05:05:34,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:34" (1/1) ... [2020-10-14 05:05:34,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:05:34,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:05:34,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:05:34,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:05:34,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:05:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:05:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:05:35,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 05:05:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 05:05:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 05:05:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 05:05:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-14 05:05:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-14 05:05:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_prepend [2020-10-14 05:05:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:05:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:05:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 05:05:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 05:05:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 05:05:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 05:05:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 05:05:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 05:05:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 05:05:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 05:05:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 05:05:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 05:05:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 05:05:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 05:05:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 05:05:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 05:05:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 05:05:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 05:05:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 05:05:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 05:05:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 05:05:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 05:05:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 05:05:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 05:05:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 05:05:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 05:05:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 05:05:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 05:05:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 05:05:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 05:05:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 05:05:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 05:05:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 05:05:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 05:05:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 05:05:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 05:05:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 05:05:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 05:05:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 05:05:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 05:05:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 05:05:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 05:05:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 05:05:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 05:05:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 05:05:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 05:05:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 05:05:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 05:05:35,017 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 05:05:35,017 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 05:05:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 05:05:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 05:05:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 05:05:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 05:05:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 05:05:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 05:05:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 05:05:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 05:05:35,020 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 05:05:35,021 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 05:05:35,021 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 05:05:35,021 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 05:05:35,022 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 05:05:35,023 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:05:35,023 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 05:05:35,023 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 05:05:35,023 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 05:05:35,023 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 05:05:35,023 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 05:05:35,023 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 05:05:35,024 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 05:05:35,024 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 05:05:35,024 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 05:05:35,024 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 05:05:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 05:05:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 05:05:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 05:05:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 05:05:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 05:05:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 05:05:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 05:05:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 05:05:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 05:05:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 05:05:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 05:05:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 05:05:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 05:05:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 05:05:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 05:05:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 05:05:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 05:05:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 05:05:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 05:05:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 05:05:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 05:05:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 05:05:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 05:05:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 05:05:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 05:05:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 05:05:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 05:05:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 05:05:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 05:05:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 05:05:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 05:05:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 05:05:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 05:05:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 05:05:35,028 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 05:05:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 05:05:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 05:05:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 05:05:35,029 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-14 05:05:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-14 05:05:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 05:05:35,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:05:35,031 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_prepend [2020-10-14 05:05:35,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:05:35,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:05:35,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 05:05:35,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 05:05:35,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:05:35,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:05:35,473 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 05:05:35,668 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:05:35,669 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 05:05:35,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:05:35 BoogieIcfgContainer [2020-10-14 05:05:35,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:05:35,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:05:35,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:05:35,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:05:35,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:05:34" (1/3) ... [2020-10-14 05:05:35,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47217704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:05:35, skipping insertion in model container [2020-10-14 05:05:35,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:34" (2/3) ... [2020-10-14 05:05:35,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47217704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:05:35, skipping insertion in model container [2020-10-14 05:05:35,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:05:35" (3/3) ... [2020-10-14 05:05:35,681 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_unequal.i [2020-10-14 05:05:35,692 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:05:35,701 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:05:35,716 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:05:35,741 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:05:35,742 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:05:35,742 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:05:35,742 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:05:35,742 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:05:35,743 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:05:35,743 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:05:35,743 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:05:35,764 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-14 05:05:35,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 05:05:35,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:35,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:35,774 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:35,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:35,781 INFO L82 PathProgramCache]: Analyzing trace with hash 619880496, now seen corresponding path program 1 times [2020-10-14 05:05:35,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:35,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022033722] [2020-10-14 05:05:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:36,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:36,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:36,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:40,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:40,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 05:05:40,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:05:40,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4256 [2020-10-14 05:05:40,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:40,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:05:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:40,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:05:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:40,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:40,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:40,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:40,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:05:40,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:40,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:40,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:05:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:40,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:40,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:40,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:05:40,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:40,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 05:05:40,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:40,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:05:40,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:40,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:40,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:40,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:40,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:40,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:40,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:40,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:05:40,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:40,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:40,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:40,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:05:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:40,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:40,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:40,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:05:40,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 05:05:40,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:40,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:05:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:40,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:40,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:40,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:40,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:40,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:40,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:40,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:05:40,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:40,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:40,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:05:40,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022033722] [2020-10-14 05:05:40,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:05:40,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:05:40,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246802395] [2020-10-14 05:05:40,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:05:40,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:40,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:05:40,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:05:40,470 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2020-10-14 05:05:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:40,843 INFO L93 Difference]: Finished difference Result 99 states and 125 transitions. [2020-10-14 05:05:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:05:40,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-14 05:05:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:40,864 INFO L225 Difference]: With dead ends: 99 [2020-10-14 05:05:40,864 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 05:05:40,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:05:40,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 05:05:40,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-14 05:05:40,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 05:05:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-14 05:05:40,931 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 35 [2020-10-14 05:05:40,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:40,937 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-14 05:05:40,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:05:40,938 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-14 05:05:40,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 05:05:40,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:40,944 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:40,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:05:40,945 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:40,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:40,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1639628125, now seen corresponding path program 1 times [2020-10-14 05:05:40,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:40,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411397436] [2020-10-14 05:05:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:40,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:40,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:41,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:42,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:45,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:45,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 05:05:45,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:05:45,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:05:45,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:45,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:05:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:05:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:05:45,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:46,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:46,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:46,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:46,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:46,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:46,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:46,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:46,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:46,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:46,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:46,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:46,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:46,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:05:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:46,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:46,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:46,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:05:46,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:05:46,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:46,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:05:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:05:46,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:05:46,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:46,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:46,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:46,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:46,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:05:46,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:46,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:05:46,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:46,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:05:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:46,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:46,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:46,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:05:46,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 05:05:46,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:46,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:05:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:46,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:46,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:46,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:46,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:46,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:46,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 05:05:46,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:46,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:46,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:05:46,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411397436] [2020-10-14 05:05:46,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:05:46,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:05:46,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276614749] [2020-10-14 05:05:46,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:05:46,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:46,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:05:46,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:05:46,257 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 7 states. [2020-10-14 05:05:46,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:46,537 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2020-10-14 05:05:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:05:46,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-14 05:05:46,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:46,540 INFO L225 Difference]: With dead ends: 70 [2020-10-14 05:05:46,541 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 05:05:46,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:05:46,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 05:05:46,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-14 05:05:46,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 05:05:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-14 05:05:46,559 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 35 [2020-10-14 05:05:46,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:46,559 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-14 05:05:46,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:05:46,559 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-14 05:05:46,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 05:05:46,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:46,561 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:46,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:05:46,562 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:46,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:46,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1024501097, now seen corresponding path program 1 times [2020-10-14 05:05:46,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:46,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523222968] [2020-10-14 05:05:46,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:46,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:47,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:50,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:50,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 05:05:50,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:05:50,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3698 [2020-10-14 05:05:50,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:50,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:05:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:05:50,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 05:05:50,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:50,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:50,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:50,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:50,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:50,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:50,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:05:50,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:50,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:50,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:50,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:50,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:50,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:05:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:50,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:50,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:05:50,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:50,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 05:05:50,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:50,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:50,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:50,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:50,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:05:50,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:50,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:50,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:50,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:50,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:50,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:50,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:05:50,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:50,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:50,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:50,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:50,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:05:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:50,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:50,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:50,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:50,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:50,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:05:50,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:50,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:50,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:05:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:50,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:50,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:50,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:05:50,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 05:05:50,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:50,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:05:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:05:50,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:50,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:50,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:50,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:50,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:50,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 05:05:50,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:50,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:05:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:05:50,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 05:05:51,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523222968] [2020-10-14 05:05:51,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:05:51,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-14 05:05:51,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095652376] [2020-10-14 05:05:51,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:05:51,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:51,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:05:51,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:05:51,063 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 13 states. [2020-10-14 05:05:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:52,170 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2020-10-14 05:05:52,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:05:52,171 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-14 05:05:52,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:52,173 INFO L225 Difference]: With dead ends: 54 [2020-10-14 05:05:52,173 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 05:05:52,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:05:52,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 05:05:52,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-10-14 05:05:52,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 05:05:52,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-14 05:05:52,194 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 45 [2020-10-14 05:05:52,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:52,195 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-14 05:05:52,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:05:52,195 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-14 05:05:52,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 05:05:52,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:52,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:52,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:05:52,202 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:52,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1081759399, now seen corresponding path program 1 times [2020-10-14 05:05:52,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:52,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130142893] [2020-10-14 05:05:52,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:55,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:55,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 05:05:55,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3554 [2020-10-14 05:05:55,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:55,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 05:05:55,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:05:55,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 05:05:55,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:56,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:56,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:56,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:56,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:56,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:05:56,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:56,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:56,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:56,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:05:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:56,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:56,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:05:56,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:56,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 05:05:56,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:56,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:05:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:05:56,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:56,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:56,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:56,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:56,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:56,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:56,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:05:56,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:56,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:05:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:05:56,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:05:56,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:05:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:56,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:56,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:56,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:56,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 05:05:56,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:56,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:05:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:05:56,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:56,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:05:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:57,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:57,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:57,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:05:57,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:57,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-14 05:05:57,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:57,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:57,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:05:57,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:05:57,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:05:57,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:58,102 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-10-14 05:05:58,312 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-14 05:05:58,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:58,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:58,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:58,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:58,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 05:05:58,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:58,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:05:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:05:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:05:58,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:58,796 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-14 05:05:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:05:58,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130142893] [2020-10-14 05:05:58,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:05:58,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 05:05:58,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481969346] [2020-10-14 05:05:58,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 05:05:58,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:58,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 05:05:58,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:05:58,818 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 25 states. [2020-10-14 05:06:00,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:00,736 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-10-14 05:06:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 05:06:00,739 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 45 [2020-10-14 05:06:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:00,743 INFO L225 Difference]: With dead ends: 48 [2020-10-14 05:06:00,743 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 05:06:00,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=1086, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 05:06:00,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 05:06:00,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-10-14 05:06:00,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 05:06:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-10-14 05:06:00,753 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 45 [2020-10-14 05:06:00,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:00,754 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-10-14 05:06:00,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 05:06:00,754 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-10-14 05:06:00,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:06:00,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:00,755 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:06:00,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:06:00,756 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:00,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:00,756 INFO L82 PathProgramCache]: Analyzing trace with hash 998082884, now seen corresponding path program 1 times [2020-10-14 05:06:00,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:00,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485499351] [2020-10-14 05:06:00,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:00,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:02,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:05,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:05,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 05:06:05,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:06:05,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4997 [2020-10-14 05:06:05,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:05,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:05,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:06:05,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:05,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 05:06:05,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:05,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:05,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:05,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:05,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:05,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:05,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:06:05,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:05,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:05,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:05,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:05,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:05,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:05,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:05,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:06,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:06,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:06:06,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:06,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 05:06:06,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:06,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:06:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:06:06,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:06,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:06,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:06,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:06,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:06,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:06,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:06:06,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:06,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:06,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:06,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:06,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:06,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:06,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:06,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:06,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:06,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:06:06,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:06,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:06:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:06:06,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:06,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:06:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:06,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:06,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:06:06,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:06,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 05:06:06,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:06,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:06,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:06:06,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:06,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:06:06,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:06,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:06,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:06,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:06:06,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:06,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:06:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:06,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:06:06,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485499351] [2020-10-14 05:06:06,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:06,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 05:06:06,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559827514] [2020-10-14 05:06:06,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 05:06:06,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:06,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 05:06:06,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:06:06,476 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 19 states. [2020-10-14 05:06:07,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:07,857 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2020-10-14 05:06:07,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:06:07,858 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-10-14 05:06:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:07,859 INFO L225 Difference]: With dead ends: 77 [2020-10-14 05:06:07,859 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 05:06:07,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:06:07,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 05:06:07,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-14 05:06:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 05:06:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-14 05:06:07,867 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 47 [2020-10-14 05:06:07,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:07,868 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-14 05:06:07,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 05:06:07,868 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-14 05:06:07,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:06:07,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:07,869 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:06:07,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:06:07,870 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:07,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:07,870 INFO L82 PathProgramCache]: Analyzing trace with hash 188736258, now seen corresponding path program 1 times [2020-10-14 05:06:07,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:07,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070711915] [2020-10-14 05:06:07,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:07,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:11,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:11,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 05:06:11,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:11,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3668 [2020-10-14 05:06:11,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:11,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 05:06:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:11,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 05:06:11,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:11,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:11,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:11,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:11,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:11,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:11,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:06:11,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:11,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:11,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:11,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:11,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:11,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:11,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:11,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:12,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:12,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:06:12,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:12,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-14 05:06:12,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:12,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:12,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:06:12,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:12,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:06:12,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:12,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:12,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:12,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:12,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:12,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:12,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 05:06:12,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:12,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:12,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:06:12,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:12,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:06:12,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:06:12,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:12,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:12,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:12,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:12,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:12,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 05:06:12,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:12,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:12,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:06:12,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:12,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:12,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:12,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:06:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:12,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:13,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:13,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:06:13,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:13,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-14 05:06:13,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:13,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:06:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:06:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:13,731 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2020-10-14 05:06:14,033 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-14 05:06:14,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:14,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:14,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:14,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:14,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:14,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 05:06:14,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:14,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:14,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:06:14,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:14,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:14,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:14,605 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-10-14 05:06:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:06:14,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070711915] [2020-10-14 05:06:14,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:14,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 05:06:14,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335466371] [2020-10-14 05:06:14,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 05:06:14,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:14,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 05:06:14,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:06:14,633 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 29 states. [2020-10-14 05:06:15,189 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-14 05:06:16,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:16,879 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-10-14 05:06:16,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 05:06:16,880 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 47 [2020-10-14 05:06:16,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:16,882 INFO L225 Difference]: With dead ends: 66 [2020-10-14 05:06:16,883 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 05:06:16,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 05:06:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 05:06:16,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-10-14 05:06:16,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 05:06:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2020-10-14 05:06:16,894 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 47 [2020-10-14 05:06:16,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:16,894 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2020-10-14 05:06:16,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 05:06:16,894 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2020-10-14 05:06:16,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:06:16,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:16,896 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:06:16,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:06:16,896 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:16,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:16,897 INFO L82 PathProgramCache]: Analyzing trace with hash 531109785, now seen corresponding path program 1 times [2020-10-14 05:06:16,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:16,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945120611] [2020-10-14 05:06:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:17,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:19,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:21,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:21,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:06:21,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:06:21,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:06:21,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:21,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 05:06:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 05:06:21,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:22,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:22,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:22,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:22,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:22,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:22,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:06:22,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:22,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:22,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:22,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:22,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:22,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:22,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:06:22,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:22,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 05:06:22,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:22,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:22,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:06:22,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:22,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:06:22,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:22,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:22,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:22,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:22,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:22,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:06:22,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:22,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:06:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:06:22,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:22,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:22,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:22,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:22,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:22,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:06:22,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:22,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:06:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:06:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:23,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:23,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:23,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:06:23,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:23,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 05:06:23,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:23,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:06:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:06:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:23,768 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-10-14 05:06:23,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:23,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:23,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:23,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:23,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:23,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:06:23,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:23,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:06:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:06:24,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945120611] [2020-10-14 05:06:24,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:24,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 05:06:24,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54556761] [2020-10-14 05:06:24,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 05:06:24,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:24,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 05:06:24,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=751, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:06:24,165 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand 29 states. [2020-10-14 05:06:25,183 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-14 05:06:26,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:26,422 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-10-14 05:06:26,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 05:06:26,423 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 50 [2020-10-14 05:06:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:26,425 INFO L225 Difference]: With dead ends: 73 [2020-10-14 05:06:26,425 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 05:06:26,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=128, Invalid=1512, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 05:06:26,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 05:06:26,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2020-10-14 05:06:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 05:06:26,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-10-14 05:06:26,436 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 50 [2020-10-14 05:06:26,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:26,436 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-10-14 05:06:26,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 05:06:26,437 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-10-14 05:06:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 05:06:26,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:26,438 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 05:06:26,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:06:26,438 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:26,439 INFO L82 PathProgramCache]: Analyzing trace with hash -715424104, now seen corresponding path program 1 times [2020-10-14 05:06:26,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:26,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389953055] [2020-10-14 05:06:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:26,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:31,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:31,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:06:31,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:06:31,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-14 05:06:31,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:31,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 05:06:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 05:06:31,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:32,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:32,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:32,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:32,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:32,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:06:32,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:32,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:32,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:32,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:32,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:32,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:32,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:32,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:06:32,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:32,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-14 05:06:32,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:32,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:06:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:06:32,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:32,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:32,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:32,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:32,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:32,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:32,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:06:32,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:32,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:06:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:06:32,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:33,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:33,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:33,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:33,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:33,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:33,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 05:06:33,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:33,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:06:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:33,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:33,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:06:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:33,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:33,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:33,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:06:33,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-14 05:06:33,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:33,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:06:33,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:33,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:06:33,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:34,289 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 55 [2020-10-14 05:06:34,805 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2020-10-14 05:06:34,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:35,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:35,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:35,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:35,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:35,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 05:06:35,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:35,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:35,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:06:35,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:35,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:35,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:35,543 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-10-14 05:06:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:06:35,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389953055] [2020-10-14 05:06:35,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:35,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:06:35,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213217462] [2020-10-14 05:06:35,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:06:35,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:35,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:06:35,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:06:35,573 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 30 states. [2020-10-14 05:06:36,148 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-14 05:06:36,871 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-14 05:06:38,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:38,917 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-14 05:06:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 05:06:38,918 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 51 [2020-10-14 05:06:38,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:38,920 INFO L225 Difference]: With dead ends: 69 [2020-10-14 05:06:38,920 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 05:06:38,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=131, Invalid=1591, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 05:06:38,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 05:06:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2020-10-14 05:06:38,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 05:06:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-10-14 05:06:38,931 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 51 [2020-10-14 05:06:38,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:38,932 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-10-14 05:06:38,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:06:38,932 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-10-14 05:06:38,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 05:06:38,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:38,934 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-14 05:06:38,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:06:38,934 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:38,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:38,934 INFO L82 PathProgramCache]: Analyzing trace with hash 2065570062, now seen corresponding path program 2 times [2020-10-14 05:06:38,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:38,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594807495] [2020-10-14 05:06:38,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:38,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:39,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:43,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:43,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 05:06:43,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:06:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 05:06:43,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:43,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:06:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:06:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:43,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:43,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:43,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:43,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:43,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:43,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:06:43,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:43,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:43,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:44,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:44,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:44,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:44,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 05:06:44,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:44,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 05:06:44,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:44,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:06:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:06:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 05:06:44,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:44,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:44,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:44,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:44,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:44,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:44,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:06:44,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:44,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:06:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:44,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:06:44,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-14 05:06:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:44,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:44,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:44,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:44,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:44,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:06:44,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:44,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:06:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:44,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:06:44,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:44,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 05:06:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:44,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:44,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:44,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:44,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:44,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:06:44,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:44,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:06:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:44,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:06:44,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 05:06:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:44,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:44,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:06:44,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:44,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:06:44,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:44,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:44,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:44,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:06:44,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:44,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:44,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:44,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:44,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:44,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:44,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:44,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:06:44,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:44,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:44,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 05:06:44,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594807495] [2020-10-14 05:06:44,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:44,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:06:44,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571817896] [2020-10-14 05:06:44,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:06:44,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:44,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:06:44,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:06:44,227 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 8 states. [2020-10-14 05:06:44,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:44,508 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2020-10-14 05:06:44,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:06:44,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-14 05:06:44,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:44,510 INFO L225 Difference]: With dead ends: 81 [2020-10-14 05:06:44,510 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 05:06:44,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:06:44,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 05:06:44,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-14 05:06:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 05:06:44,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-14 05:06:44,517 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 57 [2020-10-14 05:06:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:44,517 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-14 05:06:44,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:06:44,517 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-14 05:06:44,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:06:44,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:44,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:06:44,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:06:44,519 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:44,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:44,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1570321341, now seen corresponding path program 1 times [2020-10-14 05:06:44,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:44,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037754274] [2020-10-14 05:06:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:44,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:44,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:45,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:45,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:06:45,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:06:45,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-14 05:06:45,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:45,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:06:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 05:06:45,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:45,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:45,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:45,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:06:45,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:45,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:45,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:45,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:45,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:45,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:45,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:45,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:06:45,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:06:45,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 05:06:45,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:45,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:45,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:06:45,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:45,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:06:45,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:45,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:45,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:45,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:45,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:45,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:06:45,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:45,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:45,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:45,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:45,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:45,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:45,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:45,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:45,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:06:45,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:45,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:45,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:45,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:45,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:45,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:45,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:06:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:45,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:45,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:45,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:06:45,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:45,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:06:45,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:45,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:06:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:45,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:06:45,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:45,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:45,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:45,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:45,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:45,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:06:45,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:45,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:45,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:45,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:45,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:45,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 05:06:45,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037754274] [2020-10-14 05:06:45,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:45,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:06:45,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025399475] [2020-10-14 05:06:45,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:06:45,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:45,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:06:45,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:06:45,624 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-14 05:06:45,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:45,861 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-10-14 05:06:45,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:06:45,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-14 05:06:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:45,863 INFO L225 Difference]: With dead ends: 56 [2020-10-14 05:06:45,863 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 05:06:45,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:06:45,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 05:06:45,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-10-14 05:06:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 05:06:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-14 05:06:45,870 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 54 [2020-10-14 05:06:45,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:45,871 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-14 05:06:45,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:06:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-14 05:06:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:06:45,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:45,872 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-14 05:06:45,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:06:45,873 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:45,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1435279570, now seen corresponding path program 2 times [2020-10-14 05:06:45,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:45,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845673617] [2020-10-14 05:06:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:45,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:48,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:49,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:50,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:50,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:06:50,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:06:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-14 05:06:50,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:50,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 05:06:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:06:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 05:06:50,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:51,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:51,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:51,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:51,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:51,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:51,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:06:51,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:51,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:51,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:51,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:51,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:06:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:51,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:51,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:06:51,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:51,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 05:06:51,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:51,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:06:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:06:51,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:52,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:52,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:52,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:52,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:52,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:52,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:06:52,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:52,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:52,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:06:52,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:52,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:06:52,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:52,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:06:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:52,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:52,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:52,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:52,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:06:52,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:52,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:06:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:06:52,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:52,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:06:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:52,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:53,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:53,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:06:53,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:53,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-14 05:06:53,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:53,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:53,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:06:53,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:53,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:06:53,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:53,549 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-14 05:06:53,953 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2020-10-14 05:06:54,175 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-14 05:06:54,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:06:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:54,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:54,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:54,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:06:54,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:54,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 05:06:54,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:54,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:06:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:06:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:06:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:54,514 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:06:54,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845673617] [2020-10-14 05:06:54,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:06:54,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 05:06:54,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707254395] [2020-10-14 05:06:54,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 05:06:54,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:06:54,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 05:06:54,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=984, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:06:54,516 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 33 states. [2020-10-14 05:06:56,951 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-14 05:06:57,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:57,628 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-14 05:06:57,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 05:06:57,632 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 55 [2020-10-14 05:06:57,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:57,633 INFO L225 Difference]: With dead ends: 53 [2020-10-14 05:06:57,633 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 05:06:57,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=181, Invalid=2269, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 05:06:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 05:06:57,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-14 05:06:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 05:06:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-14 05:06:57,641 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 55 [2020-10-14 05:06:57,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:57,642 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-14 05:06:57,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 05:06:57,642 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-14 05:06:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:06:57,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:57,643 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 05:06:57,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:06:57,644 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:57,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2012800019, now seen corresponding path program 2 times [2020-10-14 05:06:57,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:57,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419367978] [2020-10-14 05:06:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:57,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:58,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:02,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:02,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 05:07:02,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:07:02,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 05:07:02,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:02,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 05:07:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:07:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 05:07:02,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:03,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:03,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:03,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:03,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:03,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:03,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:07:03,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:03,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:03,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:03,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:03,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:03,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:03,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:07:03,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:03,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-14 05:07:03,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:03,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:03,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:07:03,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:03,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:07:03,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:03,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:03,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:03,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:03,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:03,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:03,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:07:03,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:03,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:07:03,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:04,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:07:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:04,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:04,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:04,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:04,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:04,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:07:04,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:04,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:07:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:07:04,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:04,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:07:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:04,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:04,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:07:04,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:04,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-14 05:07:04,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:04,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:07:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:07:04,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:05,213 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-14 05:07:05,550 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-14 05:07:05,821 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-14 05:07:05,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:05,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:05,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:05,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:05,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:05,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:07:05,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:05,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:05,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:07:05,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:05,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:07:05,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:07:06,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419367978] [2020-10-14 05:07:06,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:07:06,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 05:07:06,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585815990] [2020-10-14 05:07:06,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 05:07:06,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:06,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 05:07:06,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=864, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:07:06,154 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 31 states. [2020-10-14 05:07:09,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:09,452 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-10-14 05:07:09,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:07:09,458 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 58 [2020-10-14 05:07:09,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:09,459 INFO L225 Difference]: With dead ends: 60 [2020-10-14 05:07:09,459 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 05:07:09,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=149, Invalid=1831, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 05:07:09,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 05:07:09,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2020-10-14 05:07:09,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 05:07:09,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-14 05:07:09,468 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 58 [2020-10-14 05:07:09,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:09,468 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-14 05:07:09,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 05:07:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-14 05:07:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:07:09,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:09,469 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:07:09,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:07:09,470 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:09,470 INFO L82 PathProgramCache]: Analyzing trace with hash 2027750596, now seen corresponding path program 3 times [2020-10-14 05:07:09,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:09,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557863956] [2020-10-14 05:07:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:09,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:12,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:14,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:14,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 05:07:14,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:07:14,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 05:07:14,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:14,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 05:07:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:07:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 05:07:14,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:14,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:14,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:14,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:14,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:14,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:07:14,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:14,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:14,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:14,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:14,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:14,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:14,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:15,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:15,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:07:15,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:15,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 05:07:15,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:15,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:07:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:07:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:15,462 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-14 05:07:15,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:15,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:15,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:15,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:15,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:15,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:07:15,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:15,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:07:15,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:15,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:07:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:15,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:15,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:15,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:15,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:15,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:07:15,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:15,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:07:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:07:15,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:15,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:07:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:15,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:16,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:16,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:07:16,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:16,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-14 05:07:16,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:16,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:16,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:07:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:07:16,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:16,615 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-14 05:07:16,953 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-14 05:07:17,152 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-14 05:07:17,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:17,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:17,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:17,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:17,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:17,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 05:07:17,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:17,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:07:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:17,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:07:17,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:07:17,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557863956] [2020-10-14 05:07:17,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:07:17,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 05:07:17,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732268561] [2020-10-14 05:07:17,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 05:07:17,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:17,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 05:07:17,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=864, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:07:17,489 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 31 states. [2020-10-14 05:07:21,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:21,214 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-14 05:07:21,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:07:21,215 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 59 [2020-10-14 05:07:21,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:21,215 INFO L225 Difference]: With dead ends: 53 [2020-10-14 05:07:21,215 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:07:21,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=153, Invalid=1917, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 05:07:21,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:07:21,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:07:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:07:21,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:07:21,218 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2020-10-14 05:07:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:21,218 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:07:21,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 05:07:21,218 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:07:21,218 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:07:21,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:07:21,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:07:21,611 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-14 05:07:22,051 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 94 [2020-10-14 05:07:22,507 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 101 [2020-10-14 05:07:22,707 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-14 05:07:22,790 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:07:22,790 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-14 05:07:22,791 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:07:22,791 INFO L271 CegarLoopResult]: At program point myexitENTRY(lines 561 563) the Hoare annotation is: true [2020-10-14 05:07:22,791 INFO L268 CegarLoopResult]: For program point myexitEXIT(lines 561 563) no Hoare annotation was computed. [2020-10-14 05:07:22,791 INFO L271 CegarLoopResult]: At program point L562(line 562) the Hoare annotation is: true [2020-10-14 05:07:22,791 INFO L264 CegarLoopResult]: At program point dll_circular_destroyENTRY(lines 590 600) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-10-14 05:07:22,792 INFO L268 CegarLoopResult]: For program point L591(lines 591 599) no Hoare annotation was computed. [2020-10-14 05:07:22,792 INFO L271 CegarLoopResult]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2020-10-14 05:07:22,792 INFO L268 CegarLoopResult]: For program point L593-3(lines 593 597) no Hoare annotation was computed. [2020-10-14 05:07:22,792 INFO L268 CegarLoopResult]: For program point L591-2(lines 590 600) no Hoare annotation was computed. [2020-10-14 05:07:22,792 INFO L268 CegarLoopResult]: For program point dll_circular_destroyEXIT(lines 590 600) no Hoare annotation was computed. [2020-10-14 05:07:22,792 INFO L268 CegarLoopResult]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2020-10-14 05:07:22,792 INFO L268 CegarLoopResult]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2020-10-14 05:07:22,793 INFO L268 CegarLoopResult]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2020-10-14 05:07:22,793 INFO L268 CegarLoopResult]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2020-10-14 05:07:22,793 INFO L268 CegarLoopResult]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2020-10-14 05:07:22,793 INFO L268 CegarLoopResult]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2020-10-14 05:07:22,793 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:07:22,793 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:07:22,793 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:07:22,793 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:07:22,793 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 617 643) no Hoare annotation was computed. [2020-10-14 05:07:22,794 INFO L268 CegarLoopResult]: For program point L630(lines 630 632) no Hoare annotation was computed. [2020-10-14 05:07:22,794 INFO L268 CegarLoopResult]: For program point L624(lines 624 626) no Hoare annotation was computed. [2020-10-14 05:07:22,794 INFO L264 CegarLoopResult]: At program point L622(line 622) the Hoare annotation is: (let ((.cse4 (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse6 (select |#memory_$Pointer$.base| .cse4)) (.cse2 (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse0 (select (select |#memory_int| .cse4) 8)) (.cse5 (select .cse6 .cse2)) (.cse3 (select |#memory_$Pointer$.offset| .cse4)) (.cse1 (select .cse6 4))) (and (= .cse0 (select (select |#memory_int| .cse1) 8)) (= main_~data~0 .cse0) (not (= |main_~#s~0.base| .cse1)) (= .cse2 0) (= (select .cse3 0) 0) (<= (+ .cse4 2) |main_~#s~0.base|) (= main_~data~0 1) (= .cse5 .cse1) (not (= .cse5 .cse4)) (= main_~len~0 2) (not (= |main_~#s~0.base| 0)) (not (= main_~data~0 main_~uneq~0)) (= (select |#valid| .cse4) 1) (= (select .cse3 (+ .cse2 4)) 0) (= |main_~#s~0.offset| 0) (not (= .cse4 0)) (= (select |#valid| .cse1) 1) (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|))))) [2020-10-14 05:07:22,794 INFO L268 CegarLoopResult]: For program point L622-1(line 622) no Hoare annotation was computed. [2020-10-14 05:07:22,795 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 617 643) no Hoare annotation was computed. [2020-10-14 05:07:22,795 INFO L264 CegarLoopResult]: At program point L620(line 620) the Hoare annotation is: (let ((.cse0 (@diff |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|))) (and (or (<= (+ .cse0 1) |#StackHeapBarrier|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (not (= |main_~#s~0.base| 0)) (= |#memory_$Pointer$.base| (store |old(#memory_$Pointer$.base)| .cse0 (select |#memory_$Pointer$.base| .cse0))) (<= main_~len~0 2) (<= 2 main_~len~0) (= |main_~#s~0.offset| 0) (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|) (= main_~data~0 1))) [2020-10-14 05:07:22,795 INFO L268 CegarLoopResult]: For program point L620-1(line 620) no Hoare annotation was computed. [2020-10-14 05:07:22,795 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 641) no Hoare annotation was computed. [2020-10-14 05:07:22,795 INFO L271 CegarLoopResult]: At program point L639(line 639) the Hoare annotation is: true [2020-10-14 05:07:22,795 INFO L268 CegarLoopResult]: For program point L639-1(line 639) no Hoare annotation was computed. [2020-10-14 05:07:22,796 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 617 643) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 05:07:22,796 INFO L264 CegarLoopResult]: At program point L637(lines 617 643) the Hoare annotation is: false [2020-10-14 05:07:22,796 INFO L268 CegarLoopResult]: For program point L629-1(lines 629 635) no Hoare annotation was computed. [2020-10-14 05:07:22,796 INFO L268 CegarLoopResult]: For program point L629-2(lines 629 635) no Hoare annotation was computed. [2020-10-14 05:07:22,796 INFO L264 CegarLoopResult]: At program point L629-4(lines 629 635) the Hoare annotation is: (let ((.cse20 (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|)) (.cse7 (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse22 (select (select |#memory_$Pointer$.base| .cse20) .cse7))) (let ((.cse27 (select |#memory_$Pointer$.offset| .cse22)) (.cse29 (select |#memory_$Pointer$.base| .cse22)) (.cse28 (select (select |#memory_$Pointer$.offset| .cse20) .cse7))) (let ((.cse9 (select (select |#memory_$Pointer$.base| main_~ptr~0.base) main_~ptr~0.offset)) (.cse0 (select (select |#memory_$Pointer$.offset| main_~ptr~0.base) main_~ptr~0.offset)) (.cse26 (select .cse29 .cse28)) (.cse25 (select .cse27 .cse28))) (let ((.cse23 (select (select |#memory_$Pointer$.base| .cse26) .cse25)) (.cse24 (select (select |#memory_$Pointer$.offset| .cse26) .cse25)) (.cse10 (select (select |#memory_int| main_~ptr~0.base) (+ main_~ptr~0.offset 8))) (.cse21 (select (select |#memory_$Pointer$.base| .cse9) .cse0)) (.cse15 (select |#memory_int| .cse22))) (let ((.cse1 (= (select (select |#memory_int| (select .cse29 0)) 8) (select .cse15 8))) (.cse2 (= main_~uneq~0 (select (select |#memory_int| .cse20) 8))) (.cse4 (= .cse7 .cse28)) (.cse3 (= .cse7 0)) (.cse5 (= main_~ptr~0.offset 0)) (.cse16 (= .cse21 .cse20)) (.cse6 (= main_~data~0 1)) (.cse11 (= main_~data~0 .cse10)) (.cse12 (= main_~len~0 2)) (.cse13 (not (= |main_~#s~0.base| 0))) (.cse14 (= (select .cse27 0) 0)) (.cse17 (= |main_~#s~0.offset| 0)) (.cse18 (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|)) (.cse19 (or (and (= .cse23 .cse20) (= .cse7 .cse24)) (and (not (= main_~data~0 main_~uneq~0)) (= .cse7 .cse25) (= .cse20 .cse26))))) (or (let ((.cse8 (select (select |#memory_$Pointer$.offset| .cse9) .cse0))) (and (= .cse0 0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= .cse7 .cse8) (= (select (select |#memory_int| .cse9) 8) .cse10) .cse11 .cse12 .cse13 .cse14 (= (select .cse15 (+ .cse7 8)) main_~data~0) .cse16 .cse17 .cse18 .cse19 (not (= .cse20 (select (select |#memory_$Pointer$.base| .cse21) .cse8))) (= main_~count~0 1))) (and (<= main_~count~0 main_~len~0) .cse1 .cse2 .cse4 .cse3 .cse5 (not .cse16) (<= main_~len~0 main_~count~0) .cse6 (= .cse7 .cse0) .cse11 .cse12 .cse13 .cse14 .cse17 (= .cse20 .cse9) (= .cse22 (select (select |#memory_$Pointer$.base| .cse23) .cse24)) .cse18 .cse19)))))))) [2020-10-14 05:07:22,796 INFO L268 CegarLoopResult]: For program point L629-5(lines 617 643) no Hoare annotation was computed. [2020-10-14 05:07:22,796 INFO L268 CegarLoopResult]: For program point L603(lines 603 615) no Hoare annotation was computed. [2020-10-14 05:07:22,796 INFO L264 CegarLoopResult]: At program point dll_circular_prependENTRY(lines 601 616) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 05:07:22,797 INFO L264 CegarLoopResult]: At program point L602(line 602) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= dll_circular_prepend_~head.base |dll_circular_prepend_#in~head.base|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |dll_circular_prepend_#in~head.offset| dll_circular_prepend_~head.offset) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= dll_circular_prepend_~data |dll_circular_prepend_#in~data|) (= |old(#valid)| |#valid|)) [2020-10-14 05:07:22,797 INFO L268 CegarLoopResult]: For program point L602-1(line 602) no Hoare annotation was computed. [2020-10-14 05:07:22,797 INFO L268 CegarLoopResult]: For program point L603-2(lines 601 616) no Hoare annotation was computed. [2020-10-14 05:07:22,797 INFO L268 CegarLoopResult]: For program point dll_circular_prependEXIT(lines 601 616) no Hoare annotation was computed. [2020-10-14 05:07:22,797 INFO L268 CegarLoopResult]: For program point L578-1(line 578) no Hoare annotation was computed. [2020-10-14 05:07:22,797 INFO L264 CegarLoopResult]: At program point L575(line 575) the Hoare annotation is: (and (= dll_circular_create_~data |dll_circular_create_#in~data|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= dll_circular_create_~len |dll_circular_create_#in~len|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 05:07:22,798 INFO L264 CegarLoopResult]: At program point L577-2(lines 577 585) the Hoare annotation is: (let ((.cse15 (select |#valid| dll_circular_create_~head~0.base))) (let ((.cse4 (<= (+ dll_circular_create_~head~0.base 1) |#StackHeapBarrier|)) (.cse6 (= dll_circular_create_~head~0.base dll_circular_create_~last~0.base)) (.cse3 (= dll_circular_create_~head~0.offset 0)) (.cse5 (select |#valid| dll_circular_create_~last~0.base)) (.cse1 (select (select |#memory_int| dll_circular_create_~head~0.base) 8)) (.cse0 (= dll_circular_create_~data |dll_circular_create_#in~data|)) (.cse10 (not (= dll_circular_create_~head~0.base 0))) (.cse11 (not (= dll_circular_create_~new_head~0.base 0))) (.cse8 (<= (+ dll_circular_create_~last~0.base 1) |#StackHeapBarrier|)) (.cse9 (= dll_circular_create_~last~0.offset 0)) (.cse13 (= (select |#valid| dll_circular_create_~new_head~0.base) 1)) (.cse14 (= .cse15 1))) (or (let ((.cse2 (@diff |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|))) (and .cse0 (= .cse1 dll_circular_create_~data) (or (<= (+ .cse2 1) |#StackHeapBarrier|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (= |#memory_$Pointer$.base| (store |old(#memory_$Pointer$.base)| .cse2 (select |#memory_$Pointer$.base| .cse2))) (= dll_circular_create_~len |dll_circular_create_#in~len|) (= dll_circular_create_~head~0.offset dll_circular_create_~last~0.offset) .cse3 .cse4 (= .cse5 1) .cse6)) (let ((.cse7 (+ dll_circular_create_~head~0.offset 4)) (.cse12 (select (select |#memory_$Pointer$.base| dll_circular_create_~new_head~0.base) dll_circular_create_~new_head~0.offset))) (and .cse0 (= (select (select |#memory_$Pointer$.offset| dll_circular_create_~new_head~0.base) dll_circular_create_~new_head~0.offset) 0) (= (select (store (select (store |#memory_$Pointer$.offset| dll_circular_create_~last~0.base (store (select |#memory_$Pointer$.offset| dll_circular_create_~last~0.base) dll_circular_create_~last~0.offset dll_circular_create_~head~0.offset)) dll_circular_create_~head~0.base) .cse7 dll_circular_create_~last~0.offset) 0) dll_circular_create_~last~0.offset) .cse8 .cse9 (= .cse1 |dll_circular_create_#in~data|) (= (select (store (select (store |#memory_$Pointer$.base| dll_circular_create_~last~0.base (store (select |#memory_$Pointer$.base| dll_circular_create_~last~0.base) dll_circular_create_~last~0.offset dll_circular_create_~head~0.base)) dll_circular_create_~head~0.base) .cse7 dll_circular_create_~last~0.base) dll_circular_create_~head~0.offset) dll_circular_create_~last~0.base) (= dll_circular_create_~new_head~0.offset 0) .cse4 (= dll_circular_create_~len 1) (<= (+ dll_circular_create_~new_head~0.base 1) |#StackHeapBarrier|) .cse10 (= (select (select |#memory_int| dll_circular_create_~new_head~0.base) 8) |dll_circular_create_#in~data|) .cse11 (= .cse12 dll_circular_create_~last~0.base) .cse13 (not .cse6) (not (= dll_circular_create_~new_head~0.base .cse12)) .cse3 .cse14 (= .cse5 .cse15) (= .cse1 (select (select |#memory_int| dll_circular_create_~last~0.base) 8)))) (and .cse0 (not (= 2 |dll_circular_create_#in~len|)) .cse10 .cse11 .cse8 .cse9 .cse13 .cse14)))) [2020-10-14 05:07:22,798 INFO L268 CegarLoopResult]: For program point dll_circular_createEXIT(lines 574 589) no Hoare annotation was computed. [2020-10-14 05:07:22,798 INFO L268 CegarLoopResult]: For program point L575-1(line 575) no Hoare annotation was computed. [2020-10-14 05:07:22,798 INFO L268 CegarLoopResult]: For program point L577-3(lines 577 585) no Hoare annotation was computed. [2020-10-14 05:07:22,798 INFO L268 CegarLoopResult]: For program point dll_circular_createFINAL(lines 574 589) no Hoare annotation was computed. [2020-10-14 05:07:22,798 INFO L268 CegarLoopResult]: For program point L580(lines 580 582) no Hoare annotation was computed. [2020-10-14 05:07:22,799 INFO L264 CegarLoopResult]: At program point dll_circular_createENTRY(lines 574 589) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 05:07:22,799 INFO L264 CegarLoopResult]: At program point L578(line 578) the Hoare annotation is: (let ((.cse0 (= dll_circular_create_~data |dll_circular_create_#in~data|))) (or (let ((.cse1 (@diff |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|))) (and .cse0 (= (select (select |#memory_int| dll_circular_create_~head~0.base) 8) dll_circular_create_~data) (or (<= (+ .cse1 1) |#StackHeapBarrier|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (= |#memory_$Pointer$.base| (store |old(#memory_$Pointer$.base)| .cse1 (select |#memory_$Pointer$.base| .cse1))) (= dll_circular_create_~len |dll_circular_create_#in~len|) (= dll_circular_create_~head~0.offset dll_circular_create_~last~0.offset) (= dll_circular_create_~head~0.offset 0) (<= (+ dll_circular_create_~head~0.base 1) |#StackHeapBarrier|) (= (select |#valid| dll_circular_create_~last~0.base) 1) (= dll_circular_create_~head~0.base dll_circular_create_~last~0.base))) (and .cse0 (not (= 2 |dll_circular_create_#in~len|)) (not (= dll_circular_create_~head~0.base 0)) (not (= dll_circular_create_~new_head~0.base 0)) (<= (+ dll_circular_create_~last~0.base 1) |#StackHeapBarrier|) (= dll_circular_create_~last~0.offset 0)))) [2020-10-14 05:07:22,799 INFO L268 CegarLoopResult]: For program point L580-2(lines 580 582) no Hoare annotation was computed. [2020-10-14 05:07:22,799 INFO L264 CegarLoopResult]: At program point node_createENTRY(lines 564 573) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 05:07:22,799 INFO L268 CegarLoopResult]: For program point node_createFINAL(lines 564 573) no Hoare annotation was computed. [2020-10-14 05:07:22,799 INFO L271 CegarLoopResult]: At program point L567(line 567) the Hoare annotation is: true [2020-10-14 05:07:22,799 INFO L268 CegarLoopResult]: For program point L566(lines 566 568) no Hoare annotation was computed. [2020-10-14 05:07:22,799 INFO L268 CegarLoopResult]: For program point node_createEXIT(lines 564 573) no Hoare annotation was computed. [2020-10-14 05:07:22,800 INFO L268 CegarLoopResult]: For program point L566-1(lines 566 568) no Hoare annotation was computed. [2020-10-14 05:07:22,818 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:246) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:693) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-14 05:07:22,822 INFO L168 Benchmark]: Toolchain (without parser) took 108584.60 ms. Allocated memory was 148.4 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 103.7 MB in the beginning and 349.6 MB in the end (delta: -245.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-10-14 05:07:22,825 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 05:07:22,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 626.10 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 103.2 MB in the beginning and 170.7 MB in the end (delta: -67.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-14 05:07:22,827 INFO L168 Benchmark]: Boogie Preprocessor took 79.50 ms. Allocated memory is still 205.5 MB. Free memory was 170.7 MB in the beginning and 167.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-10-14 05:07:22,828 INFO L168 Benchmark]: RCFGBuilder took 727.34 ms. Allocated memory is still 205.5 MB. Free memory was 167.0 MB in the beginning and 114.4 MB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2020-10-14 05:07:22,828 INFO L168 Benchmark]: TraceAbstraction took 107146.68 ms. Allocated memory was 205.5 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 113.5 MB in the beginning and 349.6 MB in the end (delta: -236.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-10-14 05:07:22,841 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 626.10 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 103.2 MB in the beginning and 170.7 MB in the end (delta: -67.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 79.50 ms. Allocated memory is still 205.5 MB. Free memory was 170.7 MB in the beginning and 167.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 727.34 ms. Allocated memory is still 205.5 MB. Free memory was 167.0 MB in the beginning and 114.4 MB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 107146.68 ms. Allocated memory was 205.5 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 113.5 MB in the beginning and 349.6 MB in the end (delta: -236.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 641]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:553) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...