/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=0.3 --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/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:20:33,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:20:33,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:20:33,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:20:33,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:20:33,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:20:33,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:20:33,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:20:33,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:20:33,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:20:33,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:20:33,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:20:33,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:20:33,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:20:33,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:20:33,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:20:33,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:20:33,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:20:33,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:20:33,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:20:33,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:20:33,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:20:33,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:20:33,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:20:33,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:20:33,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:20:33,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:20:33,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:20:33,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:20:33,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:20:33,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:20:33,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:20:33,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:20:33,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:20:33,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:20:33,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:20:33,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:20:33,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:20:33,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:20:33,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:20:33,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:20:33,234 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 12:20:33,283 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:20:33,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:20:33,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:20:33,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:20:33,286 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:20:33,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:20:33,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:20:33,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:20:33,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:20:33,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:20:33,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:20:33,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:20:33,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:20:33,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:20:33,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:20:33,290 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:20:33,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:20:33,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:20:33,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:20:33,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:20:33,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:20:33,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:33,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:20:33,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:20:33,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:20:33,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:20:33,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:20:33,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:20:33,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:20:33,293 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:20:33,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:20:33,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:20:33,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:20:33,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:20:33,749 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:20:33,751 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 12:20:33,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/605162183/710cd225812c418ca7395f015d7d78bf/FLAGae7d2963e [2020-09-25 12:20:34,496 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:20:34,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 12:20:34,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/605162183/710cd225812c418ca7395f015d7d78bf/FLAGae7d2963e [2020-09-25 12:20:34,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/605162183/710cd225812c418ca7395f015d7d78bf [2020-09-25 12:20:34,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:20:34,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:20:34,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:34,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:20:34,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:20:34,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:34" (1/1) ... [2020-09-25 12:20:34,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65536471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:34, skipping insertion in model container [2020-09-25 12:20:34,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:34" (1/1) ... [2020-09-25 12:20:34,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:20:34,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:20:35,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:35,413 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:20:35,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:35,556 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:20:35,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:35 WrapperNode [2020-09-25 12:20:35,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:35,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:20:35,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:20:35,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:20:35,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:35" (1/1) ... [2020-09-25 12:20:35,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:35" (1/1) ... [2020-09-25 12:20:35,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:35" (1/1) ... [2020-09-25 12:20:35,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:35" (1/1) ... [2020-09-25 12:20:35,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:35" (1/1) ... [2020-09-25 12:20:35,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:35" (1/1) ... [2020-09-25 12:20:35,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:35" (1/1) ... [2020-09-25 12:20:35,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:20:35,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:20:35,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:20:35,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:20:35,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:35" (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 12:20:35,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:20:35,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:20:35,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 12:20:35,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 12:20:35,714 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 12:20:35,715 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 12:20:35,715 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 12:20:35,715 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2020-09-25 12:20:35,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:20:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:20:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 12:20:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 12:20:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 12:20:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 12:20:35,716 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 12:20:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 12:20:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 12:20:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 12:20:35,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 12:20:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 12:20:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 12:20:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 12:20:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 12:20:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 12:20:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 12:20:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 12:20:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 12:20:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 12:20:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 12:20:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 12:20:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 12:20:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 12:20:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 12:20:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 12:20:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 12:20:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 12:20:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 12:20:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 12:20:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 12:20:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 12:20:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 12:20:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 12:20:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 12:20:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 12:20:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 12:20:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 12:20:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 12:20:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 12:20:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 12:20:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 12:20:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 12:20:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 12:20:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 12:20:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 12:20:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 12:20:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 12:20:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 12:20:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 12:20:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 12:20:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 12:20:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 12:20:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 12:20:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 12:20:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 12:20:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 12:20:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 12:20:35,725 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 12:20:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 12:20:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 12:20:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 12:20:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 12:20:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:20:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 12:20:35,726 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 12:20:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 12:20:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:20:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 12:20:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 12:20:35,727 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 12:20:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 12:20:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 12:20:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 12:20:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 12:20:35,728 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 12:20:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 12:20:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 12:20:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 12:20:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 12:20:35,729 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 12:20:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 12:20:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 12:20:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 12:20:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 12:20:35,732 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 12:20:35,732 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 12:20:35,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 12:20:35,732 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 12:20:35,732 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 12:20:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 12:20:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 12:20:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 12:20:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 12:20:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 12:20:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 12:20:35,733 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 12:20:35,734 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 12:20:35,734 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 12:20:35,734 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 12:20:35,734 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 12:20:35,734 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 12:20:35,734 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 12:20:35,735 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 12:20:35,735 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 12:20:35,735 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 12:20:35,735 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 12:20:35,735 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 12:20:35,735 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 12:20:35,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 12:20:35,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 12:20:35,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:20:35,736 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 12:20:35,736 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2020-09-25 12:20:35,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 12:20:35,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:20:35,737 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:20:35,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 12:20:35,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 12:20:35,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:20:35,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:20:35,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:20:36,081 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 12:20:36,418 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:20:36,418 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 12:20:36,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:36 BoogieIcfgContainer [2020-09-25 12:20:36,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:20:36,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:20:36,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:20:36,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:20:36,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:20:34" (1/3) ... [2020-09-25 12:20:36,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aedc140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:36, skipping insertion in model container [2020-09-25 12:20:36,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:35" (2/3) ... [2020-09-25 12:20:36,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aedc140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:36, skipping insertion in model container [2020-09-25 12:20:36,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:36" (3/3) ... [2020-09-25 12:20:36,434 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2020-09-25 12:20:36,447 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:20:36,459 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:20:36,482 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:20:36,508 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:20:36,509 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:20:36,509 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:20:36,509 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:20:36,509 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:20:36,509 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:20:36,509 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:20:36,510 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:20:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-09-25 12:20:36,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 12:20:36,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:36,546 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] [2020-09-25 12:20:36,547 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:36,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:36,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1728925643, now seen corresponding path program 1 times [2020-09-25 12:20:36,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:36,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828237227] [2020-09-25 12:20:36,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:36,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:37,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:37,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:37,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 12:20:37,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:20:37,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-09-25 12:20:37,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:37,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:37,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:20:37,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:37,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:20:37,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:20:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:37,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:37,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:37,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:37,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:37,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:20:37,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:37,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:37,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:37,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:20:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:37,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:37,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:37,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:20:37,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:37,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 12:20:37,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:37,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:37,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:20:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:20:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:20:37,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:37,832 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 12:20:37,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828237227] [2020-09-25 12:20:37,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:37,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:20:37,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892153325] [2020-09-25 12:20:37,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:20:37,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:37,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:20:37,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:20:37,868 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 7 states. [2020-09-25 12:20:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:38,289 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-09-25 12:20:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:20:38,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 12:20:38,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:38,304 INFO L225 Difference]: With dead ends: 129 [2020-09-25 12:20:38,304 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 12:20:38,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:20:38,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 12:20:38,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2020-09-25 12:20:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 12:20:38,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-25 12:20:38,370 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 27 [2020-09-25 12:20:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:38,371 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-25 12:20:38,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:20:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-25 12:20:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 12:20:38,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:38,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:38,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:20:38,375 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:38,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:38,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1632096868, now seen corresponding path program 1 times [2020-09-25 12:20:38,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:38,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862314010] [2020-09-25 12:20:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:38,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:38,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:38,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:39,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:39,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:20:39,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:20:39,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 865 [2020-09-25 12:20:39,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:39,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:20:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:20:39,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:39,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:39,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:39,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:39,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:39,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:39,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:39,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:39,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:39,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:39,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:39,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:20:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:39,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:39,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:39,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:39,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:20:39,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:39,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 12:20:39,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:39,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:20:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:20:39,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:39,513 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 12:20:39,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862314010] [2020-09-25 12:20:39,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:39,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:20:39,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701756837] [2020-09-25 12:20:39,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:20:39,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:39,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:20:39,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:20:39,517 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 6 states. [2020-09-25 12:20:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:39,729 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-09-25 12:20:39,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:20:39,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-09-25 12:20:39,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:39,733 INFO L225 Difference]: With dead ends: 71 [2020-09-25 12:20:39,733 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:20:39,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:20:39,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:20:39,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-09-25 12:20:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 12:20:39,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-25 12:20:39,752 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 39 [2020-09-25 12:20:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:39,752 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-25 12:20:39,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:20:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-25 12:20:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 12:20:39,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:39,759 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] [2020-09-25 12:20:39,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:20:39,760 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:39,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:39,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1675692718, now seen corresponding path program 1 times [2020-09-25 12:20:39,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:39,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273907292] [2020-09-25 12:20:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:39,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:40,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:40,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:44,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:44,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:20:44,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:20:44,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:20:44,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:44,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:44,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:44,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:44,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:20:44,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:44,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:44,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:44,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:44,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:44,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:44,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:44,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:44,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:44,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:44,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:44,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:20:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:44,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:45,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:45,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:45,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:20:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 12:20:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:45,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:20:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:20:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:45,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 12:20:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:45,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:45,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:45,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 12:20:45,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:45,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:20:45,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:45,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:45,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:20:45,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:45,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:20:45,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:45,225 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 12:20:45,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273907292] [2020-09-25 12:20:45,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:45,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:20:45,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893975476] [2020-09-25 12:20:45,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:20:45,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:45,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:20:45,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:20:45,228 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 9 states. [2020-09-25 12:20:45,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:45,516 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-09-25 12:20:45,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:20:45,516 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-25 12:20:45,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:45,518 INFO L225 Difference]: With dead ends: 73 [2020-09-25 12:20:45,518 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 12:20:45,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:20:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 12:20:45,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-09-25 12:20:45,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 12:20:45,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-25 12:20:45,529 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 57 [2020-09-25 12:20:45,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:45,529 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-25 12:20:45,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:20:45,529 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-25 12:20:45,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 12:20:45,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:45,533 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] [2020-09-25 12:20:45,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:20:45,534 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:45,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:45,534 INFO L82 PathProgramCache]: Analyzing trace with hash -182223992, now seen corresponding path program 2 times [2020-09-25 12:20:45,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:45,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35003538] [2020-09-25 12:20:45,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:45,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:45,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:46,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:46,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:46,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:50,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:50,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:20:50,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:20:50,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:20:50,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:50,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:20:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:20:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:20:50,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:50,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:50,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:50,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:50,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:50,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:50,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:20:50,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:50,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:50,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:20:50,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:20:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:50,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:50,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:20:50,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:50,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 12:20:50,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:50,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:50,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:20:50,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:50,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:20:50,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:50,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 12:20:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:51,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 12:20:51,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:51,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:20:51,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:51,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:51,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:20:51,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:51,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:20:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:51,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 12:20:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:51,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:51,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 12:20:51,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:51,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:20:51,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:51,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:20:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 12:20:51,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35003538] [2020-09-25 12:20:51,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:51,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:20:51,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821559597] [2020-09-25 12:20:51,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:20:51,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:51,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:20:51,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:20:51,071 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 13 states. [2020-09-25 12:20:51,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:51,543 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-09-25 12:20:51,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:20:51,544 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 75 [2020-09-25 12:20:51,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:51,546 INFO L225 Difference]: With dead ends: 128 [2020-09-25 12:20:51,546 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 12:20:51,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:20:51,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 12:20:51,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2020-09-25 12:20:51,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 12:20:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 12:20:51,556 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 75 [2020-09-25 12:20:51,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:51,557 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 12:20:51,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:20:51,557 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 12:20:51,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 12:20:51,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:51,559 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 12:20:51,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:20:51,559 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:51,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:51,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1955081336, now seen corresponding path program 3 times [2020-09-25 12:20:51,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:51,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730953272] [2020-09-25 12:20:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:51,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:52,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:53,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:54,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:56,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:56,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 12:20:56,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:20:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:20:56,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:56,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:20:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 12:20:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 12:20:56,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:56,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:56,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:56,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:56,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:56,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:20:56,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:56,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:56,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:56,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:56,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:56,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:20:56,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:20:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:56,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:56,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:56,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:57,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:57,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:20:57,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:20:57,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-25 12:20:57,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:57,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:20:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 12:20:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:20:57,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 12:20:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:57,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:57,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:57,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 12:20:57,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:57,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 12:20:57,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:57,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:57,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:20:57,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:57,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 12:20:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:57,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:57,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:57,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:57,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 12:20:57,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:57,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 12:20:57,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:57,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:57,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:57,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:57,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:20:57,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 12:20:57,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730953272] [2020-09-25 12:20:57,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:57,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:20:57,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173118439] [2020-09-25 12:20:57,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:20:57,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:57,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:20:57,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:20:57,630 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 12 states. [2020-09-25 12:20:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:58,448 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2020-09-25 12:20:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 12:20:58,449 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 87 [2020-09-25 12:20:58,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:58,452 INFO L225 Difference]: With dead ends: 162 [2020-09-25 12:20:58,452 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 12:20:58,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2020-09-25 12:20:58,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 12:20:58,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 84. [2020-09-25 12:20:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 12:20:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2020-09-25 12:20:58,476 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 87 [2020-09-25 12:20:58,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:58,479 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2020-09-25 12:20:58,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:20:58,479 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2020-09-25 12:20:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 12:20:58,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:58,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:58,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:20:58,484 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:58,484 INFO L82 PathProgramCache]: Analyzing trace with hash 131916194, now seen corresponding path program 1 times [2020-09-25 12:20:58,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:58,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094131641] [2020-09-25 12:20:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:58,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:59,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:59,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:00,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:03,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:04,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:04,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 12:21:04,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:21:04,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5848 [2020-09-25 12:21:04,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:04,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:04,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 12:21:04,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:21:04,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:21:04,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:04,812 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2020-09-25 12:21:04,941 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-09-25 12:21:05,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:05,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:05,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:05,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:05,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:21:05,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:05,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:05,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:05,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:21:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:05,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:06,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:06,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:21:06,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 981 [2020-09-25 12:21:06,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:06,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:21:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:21:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:06,460 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-09-25 12:21:06,872 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-09-25 12:21:07,305 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-09-25 12:21:07,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 12:21:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:07,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:08,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 12:21:08,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:08,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-25 12:21:08,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:08,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:21:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:21:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:21:08,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:08,844 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-09-25 12:21:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 12:21:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:08,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:08,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:21:08,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:08,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 12:21:08,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:08,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:21:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:21:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:21:08,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 12:21:09,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094131641] [2020-09-25 12:21:09,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:09,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 12:21:09,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092573582] [2020-09-25 12:21:09,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 12:21:09,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:09,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 12:21:09,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:21:09,317 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 27 states. [2020-09-25 12:21:10,203 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-09-25 12:21:10,552 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-25 12:21:12,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:12,186 INFO L93 Difference]: Finished difference Result 176 states and 190 transitions. [2020-09-25 12:21:12,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 12:21:12,186 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 89 [2020-09-25 12:21:12,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:12,188 INFO L225 Difference]: With dead ends: 176 [2020-09-25 12:21:12,188 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 12:21:12,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=223, Invalid=1939, Unknown=0, NotChecked=0, Total=2162 [2020-09-25 12:21:12,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 12:21:12,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2020-09-25 12:21:12,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-25 12:21:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2020-09-25 12:21:12,203 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 89 [2020-09-25 12:21:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:12,203 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2020-09-25 12:21:12,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 12:21:12,204 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2020-09-25 12:21:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 12:21:12,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:12,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 12:21:12,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:21:12,206 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:12,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:12,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1167974453, now seen corresponding path program 1 times [2020-09-25 12:21:12,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:12,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292521982] [2020-09-25 12:21:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:12,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:15,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:17,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-25 12:21:17,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:21:17,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5188 [2020-09-25 12:21:17,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:17,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:17,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 12:21:17,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 12:21:17,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 12:21:17,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:17,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:17,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:17,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:17,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:17,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:21:17,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:17,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:17,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:17,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:17,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:17,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:17,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:21:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:17,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:18,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:19,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:19,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:21:19,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:19,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-09-25 12:21:19,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:19,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:21:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:19,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:21:19,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1