/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 SingleStatement --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:05:38,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:38,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:38,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:38,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:38,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:38,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:38,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:38,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:38,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:38,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:38,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:38,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:38,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:38,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:38,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:38,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:38,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:38,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:38,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:38,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:38,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:38,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:38,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:38,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:38,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:38,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:38,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:38,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:38,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:38,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:38,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:38,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:38,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:38,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:38,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:38,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:38,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:38,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:38,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:38,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:38,805 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 [2020-09-25 10:05:38,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:38,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:38,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:38,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:38,831 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:38,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:38,832 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:38,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:38,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:38,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:38,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:38,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:38,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:38,833 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:38,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:38,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:38,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:38,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:38,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:38,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:38,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:38,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:38,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:38,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:38,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:38,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:38,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:38,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:38,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:38,836 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 -> SingleStatement 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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:05:39,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:05:39,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:05:39,351 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:05:39,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:05:39,354 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:05:39,355 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 10:05:39,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f02deae3/bc2508b40d674e978a3f2c4c27ddf773/FLAGcba8dfaa3 [2020-09-25 10:05:40,122 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:05:40,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 10:05:40,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f02deae3/bc2508b40d674e978a3f2c4c27ddf773/FLAGcba8dfaa3 [2020-09-25 10:05:40,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f02deae3/bc2508b40d674e978a3f2c4c27ddf773 [2020-09-25 10:05:40,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:05:40,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:05:40,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:40,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:05:40,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:05:40,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:40" (1/1) ... [2020-09-25 10:05:40,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d78f5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:40, skipping insertion in model container [2020-09-25 10:05:40,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:40" (1/1) ... [2020-09-25 10:05:40,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:05:40,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:05:40,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:40,949 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:05:41,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:41,099 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:05:41,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:41 WrapperNode [2020-09-25 10:05:41,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:41,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:05:41,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:05:41,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:05:41,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:41" (1/1) ... [2020-09-25 10:05:41,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:41" (1/1) ... [2020-09-25 10:05:41,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:41" (1/1) ... [2020-09-25 10:05:41,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:41" (1/1) ... [2020-09-25 10:05:41,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:41" (1/1) ... [2020-09-25 10:05:41,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:41" (1/1) ... [2020-09-25 10:05:41,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:41" (1/1) ... [2020-09-25 10:05:41,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:05:41,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:05:41,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:05:41,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:05:41,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:41" (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 [2020-09-25 10:05:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:05:41,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:05:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 10:05:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 10:05:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 10:05:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 10:05:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 10:05:41,271 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 10:05:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-09-25 10:05:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-09-25 10:05:41,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:05:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:05:41,272 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 10:05:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 10:05:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 10:05:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 10:05:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 10:05:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 10:05:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 10:05:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 10:05:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 10:05:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 10:05:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 10:05:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 10:05:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 10:05:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 10:05:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 10:05:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 10:05:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 10:05:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 10:05:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 10:05:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 10:05:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 10:05:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 10:05:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 10:05:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 10:05:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 10:05:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 10:05:41,277 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 10:05:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 10:05:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 10:05:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 10:05:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 10:05:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 10:05:41,278 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 10:05:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 10:05:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 10:05:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 10:05:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 10:05:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 10:05:41,279 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 10:05:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 10:05:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 10:05:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 10:05:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 10:05:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 10:05:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 10:05:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 10:05:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 10:05:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 10:05:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 10:05:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 10:05:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 10:05:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 10:05:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:05:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:05:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 10:05:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:05:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 10:05:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 10:05:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 10:05:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 10:05:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 10:05:41,283 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:05:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 10:05:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 10:05:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 10:05:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:05:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 10:05:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 10:05:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 10:05:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 10:05:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 10:05:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 10:05:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 10:05:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 10:05:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 10:05:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 10:05:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 10:05:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 10:05:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 10:05:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 10:05:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 10:05:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 10:05:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 10:05:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 10:05:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 10:05:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 10:05:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 10:05:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 10:05:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 10:05:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 10:05:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 10:05:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 10:05:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 10:05:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 10:05:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 10:05:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 10:05:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 10:05:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 10:05:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 10:05:41,289 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 10:05:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 10:05:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 10:05:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 10:05:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 10:05:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 10:05:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 10:05:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 10:05:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:05:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:05:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:05:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 10:05:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 10:05:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:05:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:05:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-09-25 10:05:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:05:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-09-25 10:05:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:05:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:05:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:05:41,730 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 10:05:41,921 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:05:41,921 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 10:05:41,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:41 BoogieIcfgContainer [2020-09-25 10:05:41,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:05:41,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:05:41,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:05:41,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:05:41,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:05:40" (1/3) ... [2020-09-25 10:05:41,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd5916e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:41, skipping insertion in model container [2020-09-25 10:05:41,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:41" (2/3) ... [2020-09-25 10:05:41,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd5916e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:41, skipping insertion in model container [2020-09-25 10:05:41,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:41" (3/3) ... [2020-09-25 10:05:41,937 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-09-25 10:05:41,949 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:05:41,960 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:05:41,984 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:05:42,018 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:05:42,018 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:05:42,018 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:05:42,019 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:05:42,019 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:05:42,019 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:05:42,019 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:05:42,019 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:05:42,046 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-25 10:05:42,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 10:05:42,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:42,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:42,059 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:42,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:42,068 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-09-25 10:05:42,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:42,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036949726] [2020-09-25 10:05:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:42,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:42,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:42,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:43,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:43,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 10:05:43,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:05:43,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 874 [2020-09-25 10:05:43,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:43,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:43,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:05:43,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:43,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:05:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:05:43,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:43,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:43,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:43,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:43,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:05:43,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:43,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:43,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:43,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:43,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:43,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:43,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 10:05:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:43,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:43,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:43,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:43,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:05:43,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:43,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 10:05:43,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:43,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:05:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:05:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:43,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 10:05:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:43,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:43,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:05:43,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:05:43,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:43,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 10:05:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:43,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:43,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036949726] [2020-09-25 10:05:43,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:43,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:05:43,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32659168] [2020-09-25 10:05:43,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:05:43,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:43,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:05:43,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:05:43,408 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 6 states. [2020-09-25 10:05:44,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:44,238 INFO L93 Difference]: Finished difference Result 242 states and 303 transitions. [2020-09-25 10:05:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:05:44,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 10:05:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:44,259 INFO L225 Difference]: With dead ends: 242 [2020-09-25 10:05:44,259 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 10:05:44,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:05:44,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 10:05:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 85. [2020-09-25 10:05:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 10:05:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-09-25 10:05:44,345 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 38 [2020-09-25 10:05:44,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:44,346 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-09-25 10:05:44,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:05:44,346 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-09-25 10:05:44,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 10:05:44,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:44,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:44,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:05:44,349 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:44,350 INFO L82 PathProgramCache]: Analyzing trace with hash -841200203, now seen corresponding path program 1 times [2020-09-25 10:05:44,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:44,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970218024] [2020-09-25 10:05:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:44,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:44,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:44,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:49,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:49,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 10:05:49,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:05:49,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:05:49,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:49,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:49,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:05:49,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:49,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 10:05:49,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:49,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:49,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:49,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:49,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:49,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:49,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:49,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:49,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 10:05:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:49,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:49,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:49,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:05:49,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:49,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 10:05:49,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:49,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:05:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:05:49,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:49,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:05:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:49,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:49,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:49,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:05:49,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:49,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:05:49,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:49,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:05:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:05:49,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:49,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 10:05:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:49,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:49,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:49,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:05:49,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:49,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:05:49,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:49,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:49,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:05:49,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:05:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:05:49,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:05:49,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970218024] [2020-09-25 10:05:49,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:49,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 10:05:49,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638886951] [2020-09-25 10:05:49,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:05:49,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:49,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:05:49,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:05:49,626 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 9 states. [2020-09-25 10:05:50,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:50,363 INFO L93 Difference]: Finished difference Result 181 states and 199 transitions. [2020-09-25 10:05:50,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:05:50,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 10:05:50,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:50,366 INFO L225 Difference]: With dead ends: 181 [2020-09-25 10:05:50,367 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 10:05:50,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:05:50,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 10:05:50,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 94. [2020-09-25 10:05:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 10:05:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-09-25 10:05:50,386 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 51 [2020-09-25 10:05:50,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:50,386 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-09-25 10:05:50,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:05:50,387 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-09-25 10:05:50,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 10:05:50,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:50,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:50,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:05:50,391 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:50,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:50,391 INFO L82 PathProgramCache]: Analyzing trace with hash 884026993, now seen corresponding path program 1 times [2020-09-25 10:05:50,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:50,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238758636] [2020-09-25 10:05:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:50,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:50,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:50,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:50,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:55,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:55,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:05:55,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:05:55,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-09-25 10:05:55,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:55,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:05:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:05:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:05:55,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:05:55,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:55,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:55,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:55,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:55,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:55,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:05:55,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:55,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:55,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:55,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:55,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:55,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:05:55,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 10:05:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:55,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:55,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:55,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:05:55,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:55,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:05:55,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:55,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:05:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:05:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:55,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 10:05:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:55,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:55,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:55,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:05:55,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:55,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:05:55,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:55,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:55,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:05:55,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:05:55,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:55,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 10:05:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:55,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:55,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:55,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:05:55,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:55,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:05:55,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:55,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:05:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:05:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:05:55,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:05:55,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238758636] [2020-09-25 10:05:55,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:55,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:05:55,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524771871] [2020-09-25 10:05:55,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:05:55,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:55,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:05:55,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:05:55,820 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 11 states. [2020-09-25 10:05:56,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:56,559 INFO L93 Difference]: Finished difference Result 170 states and 183 transitions. [2020-09-25 10:05:56,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:05:56,560 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-09-25 10:05:56,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:56,562 INFO L225 Difference]: With dead ends: 170 [2020-09-25 10:05:56,562 INFO L226 Difference]: Without dead ends: 107 [2020-09-25 10:05:56,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:05:56,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-25 10:05:56,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2020-09-25 10:05:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 10:05:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2020-09-25 10:05:56,589 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 58 [2020-09-25 10:05:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:56,590 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2020-09-25 10:05:56,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:05:56,590 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2020-09-25 10:05:56,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 10:05:56,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:56,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:56,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:05:56,595 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:56,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:56,596 INFO L82 PathProgramCache]: Analyzing trace with hash 281898851, now seen corresponding path program 1 times [2020-09-25 10:05:56,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:56,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557543555] [2020-09-25 10:05:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:56,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:56,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:01,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:01,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 10:06:01,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:06:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:06:01,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:01,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:06:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:06:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 10:06:01,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:01,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:01,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:01,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:01,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:01,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:01,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:06:01,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:01,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:01,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:01,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 10:06:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:01,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:01,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:01,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:06:01,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:01,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 10:06:01,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:01,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:01,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:06:01,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:01,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 10:06:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:01,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:01,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:01,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:06:01,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:01,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:06:01,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:01,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:01,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:01,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:06:01,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:06:02,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 10:06:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:02,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:06:02,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:02,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:06:02,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:02,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:02,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:06:02,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:02,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 10:06:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:02,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:06:02,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:02,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:06:02,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:06:02,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:02,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:02,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557543555] [2020-09-25 10:06:02,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:02,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:06:02,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840795978] [2020-09-25 10:06:02,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:06:02,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:02,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:06:02,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:06:02,124 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand 13 states. [2020-09-25 10:06:02,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:02,758 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2020-09-25 10:06:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:06:02,759 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-09-25 10:06:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:02,762 INFO L225 Difference]: With dead ends: 170 [2020-09-25 10:06:02,762 INFO L226 Difference]: Without dead ends: 116 [2020-09-25 10:06:02,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-09-25 10:06:02,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-25 10:06:02,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2020-09-25 10:06:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 10:06:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2020-09-25 10:06:02,790 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 76 [2020-09-25 10:06:02,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:02,791 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2020-09-25 10:06:02,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:06:02,792 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2020-09-25 10:06:02,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-25 10:06:02,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:02,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:02,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:06:02,798 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:02,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:02,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1586882603, now seen corresponding path program 2 times [2020-09-25 10:06:02,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:02,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836226571] [2020-09-25 10:06:02,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:02,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:03,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:03,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:04,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:08,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 10:06:08,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:06:08,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5195 [2020-09-25 10:06:08,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:08,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-09-25 10:06:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:06:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 10:06:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:08,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:08,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:08,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:08,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:08,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:06:08,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:08,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:08,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 10:06:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:09,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 10:06:09,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:09,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1514 [2020-09-25 10:06:09,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:09,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 10:06:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:09,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 10:06:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:10,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 10:06:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:10,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:10,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:10,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:06:10,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:10,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 10:06:10,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:10,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:06:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:06:10,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:10,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 10:06:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:10,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:10,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:10,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:06:10,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:10,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 10:06:10,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:10,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:10,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:06:10,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:10,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:06:10,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:11,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 10:06:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:11,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:11,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:11,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:06:11,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:11,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 10:06:11,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:11,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:06:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:06:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:11,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 10:06:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:11,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:11,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:11,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:06:11,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:11,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 10:06:11,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:11,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:11,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:06:11,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:11,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:06:11,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:12,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836226571] [2020-09-25 10:06:12,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:12,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-09-25 10:06:12,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203613570] [2020-09-25 10:06:12,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-09-25 10:06:12,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:12,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-09-25 10:06:12,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1628, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 10:06:12,137 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand 42 states. [2020-09-25 10:06:17,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:17,557 INFO L93 Difference]: Finished difference Result 165 states and 186 transitions. [2020-09-25 10:06:17,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-09-25 10:06:17,557 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2020-09-25 10:06:17,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:17,560 INFO L225 Difference]: With dead ends: 165 [2020-09-25 10:06:17,560 INFO L226 Difference]: Without dead ends: 162 [2020-09-25 10:06:17,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=455, Invalid=6517, Unknown=0, NotChecked=0, Total=6972 [2020-09-25 10:06:17,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-25 10:06:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 132. [2020-09-25 10:06:17,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-25 10:06:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 147 transitions. [2020-09-25 10:06:17,579 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 147 transitions. Word has length 94 [2020-09-25 10:06:17,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:17,580 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 147 transitions. [2020-09-25 10:06:17,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-09-25 10:06:17,580 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 147 transitions. [2020-09-25 10:06:17,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 10:06:17,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:17,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:17,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:06:17,582 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:17,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:17,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1645330513, now seen corresponding path program 3 times [2020-09-25 10:06:17,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:17,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128419035] [2020-09-25 10:06:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:17,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:18,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:20,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:22,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:22,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 10:06:22,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:06:22,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 10:06:22,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:22,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:22,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:06:22,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:06:22,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 10:06:22,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:22,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:22,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:22,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:22,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:22,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:06:22,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:22,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:22,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:22,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 10:06:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:22,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:22,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:23,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 10:06:23,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:23,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-25 10:06:23,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:23,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 10:06:23,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:23,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 10:06:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:23,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:23,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:06:23,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:23,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:06:23,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:23,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:23,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 10:06:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:23,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:23,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:06:23,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:23,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:06:23,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:23,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:23,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:23,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:23,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 10:06:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:23,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:06:23,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:23,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:06:23,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:23,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:23,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:06:23,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 10:06:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:23,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:23,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 10:06:23,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:23,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 10:06:23,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:23,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:06:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 10:06:23,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 10:06:23,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128419035] [2020-09-25 10:06:23,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:23,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:06:23,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215402144] [2020-09-25 10:06:23,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:06:23,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:23,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:06:23,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:06:23,315 INFO L87 Difference]: Start difference. First operand 132 states and 147 transitions. Second operand 11 states. [2020-09-25 10:06:23,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:23,937 INFO L93 Difference]: Finished difference Result 190 states and 210 transitions. [2020-09-25 10:06:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:06:23,938 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 101 [2020-09-25 10:06:23,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:23,940 INFO L225 Difference]: With dead ends: 190 [2020-09-25 10:06:23,940 INFO L226 Difference]: Without dead ends: 146 [2020-09-25 10:06:23,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:06:23,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-25 10:06:23,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 127. [2020-09-25 10:06:23,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-25 10:06:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2020-09-25 10:06:23,952 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 101 [2020-09-25 10:06:23,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:23,953 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2020-09-25 10:06:23,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:06:23,953 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2020-09-25 10:06:23,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 10:06:23,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:23,955 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:23,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:06:23,955 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:23,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:23,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1397149621, now seen corresponding path program 1 times [2020-09-25 10:06:23,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:23,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019963076] [2020-09-25 10:06:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:24,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking...