/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:05:04,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:05:04,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:05:04,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:05:04,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:05:04,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:05:04,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:05:04,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:05:04,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:05:04,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:05:04,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:05:04,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:05:04,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:05:04,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:05:04,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:05:04,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:05:04,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:05:04,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:05:04,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:05:04,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:05:04,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:05:04,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:05:04,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:05:04,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:05:04,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:05:04,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:05:04,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:05:04,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:05:04,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:05:04,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:05:04,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:05:04,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:05:04,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:05:04,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:05:04,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:05:04,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:05:04,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:05:04,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:05:04,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:05:04,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:05:04,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:05:04,508 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 05:05:04,530 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:05:04,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:05:04,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:05:04,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:05:04,531 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:05:04,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:05:04,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:05:04,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:05:04,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:05:04,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:05:04,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:05:04,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:05:04,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:05:04,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:05:04,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:05:04,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:05:04,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:05:04,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:05:04,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:05:04,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:05:04,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:05:04,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:05:04,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:05:04,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:05:04,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:05:04,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:05:04,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:05:04,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:05:04,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:05:04,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:05:04,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:05:04,864 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:05:04,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:05:04,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:05:04,871 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:05:04,872 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2020-10-14 05:05:04,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f98ea7f57/9d89239926fe40a496d031f10050d39f/FLAG9985d9225 [2020-10-14 05:05:05,439 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:05:05,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2020-10-14 05:05:05,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f98ea7f57/9d89239926fe40a496d031f10050d39f/FLAG9985d9225 [2020-10-14 05:05:05,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f98ea7f57/9d89239926fe40a496d031f10050d39f [2020-10-14 05:05:05,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:05:05,761 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:05:05,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:05:05,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:05:05,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:05:05,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:05:05" (1/1) ... [2020-10-14 05:05:05,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3eedfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:05, skipping insertion in model container [2020-10-14 05:05:05,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:05:05" (1/1) ... [2020-10-14 05:05:05,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:05:05,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:05:06,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:05:06,221 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:05:06,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:05:06,337 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:05:06,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:06 WrapperNode [2020-10-14 05:05:06,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:05:06,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:05:06,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:05:06,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:05:06,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:06" (1/1) ... [2020-10-14 05:05:06,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:06" (1/1) ... [2020-10-14 05:05:06,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:06" (1/1) ... [2020-10-14 05:05:06,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:06" (1/1) ... [2020-10-14 05:05:06,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:06" (1/1) ... [2020-10-14 05:05:06,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:06" (1/1) ... [2020-10-14 05:05:06,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:06" (1/1) ... [2020-10-14 05:05:06,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:05:06,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:05:06,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:05:06,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:05:06,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:05:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:05:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:05:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 05:05:06,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 05:05:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 05:05:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 05:05:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-14 05:05:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-14 05:05:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_prepend [2020-10-14 05:05:06,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:05:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:05:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 05:05:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 05:05:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 05:05:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 05:05:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 05:05:06,482 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 05:05:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 05:05:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 05:05:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 05:05:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 05:05:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 05:05:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 05:05:06,483 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 05:05:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 05:05:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 05:05:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 05:05:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 05:05:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 05:05:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 05:05:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 05:05:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 05:05:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 05:05:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 05:05:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 05:05:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 05:05:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 05:05:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 05:05:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 05:05:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 05:05:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 05:05:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 05:05:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 05:05:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 05:05:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 05:05:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 05:05:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 05:05:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 05:05:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 05:05:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 05:05:06,487 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 05:05:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 05:05:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 05:05:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 05:05:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 05:05:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 05:05:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 05:05:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 05:05:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 05:05:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 05:05:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 05:05:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 05:05:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 05:05:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 05:05:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 05:05:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 05:05:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 05:05:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 05:05:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 05:05:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 05:05:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 05:05:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 05:05:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:05:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 05:05:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 05:05:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 05:05:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 05:05:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 05:05:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 05:05:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 05:05:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 05:05:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 05:05:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 05:05:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 05:05:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 05:05:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 05:05:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 05:05:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 05:05:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 05:05:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 05:05:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 05:05:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 05:05:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 05:05:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 05:05:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 05:05:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 05:05:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 05:05:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 05:05:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 05:05:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 05:05:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 05:05:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 05:05:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 05:05:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 05:05:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 05:05:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 05:05:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 05:05:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 05:05:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 05:05:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 05:05:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 05:05:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 05:05:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 05:05:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 05:05:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 05:05:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 05:05:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 05:05:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 05:05:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 05:05:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 05:05:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 05:05:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-14 05:05:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-14 05:05:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 05:05:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:05:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_prepend [2020-10-14 05:05:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:05:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:05:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 05:05:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 05:05:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:05:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:05:06,914 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 05:05:07,087 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:05:07,087 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 05:05:07,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:05:07 BoogieIcfgContainer [2020-10-14 05:05:07,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:05:07,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:05:07,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:05:07,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:05:07,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:05:05" (1/3) ... [2020-10-14 05:05:07,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e52b305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:05:07, skipping insertion in model container [2020-10-14 05:05:07,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:05:06" (2/3) ... [2020-10-14 05:05:07,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e52b305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:05:07, skipping insertion in model container [2020-10-14 05:05:07,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:05:07" (3/3) ... [2020-10-14 05:05:07,099 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_equal.i [2020-10-14 05:05:07,109 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:05:07,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:05:07,131 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:05:07,155 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:05:07,156 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:05:07,156 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:05:07,156 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:05:07,156 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:05:07,157 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:05:07,157 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:05:07,157 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:05:07,176 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-14 05:05:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 05:05:07,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:07,186 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:07,186 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:07,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:07,193 INFO L82 PathProgramCache]: Analyzing trace with hash -301799002, now seen corresponding path program 1 times [2020-10-14 05:05:07,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:07,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965734626] [2020-10-14 05:05:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:07,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:07,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:07,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:07,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 05:05:07,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:05:07,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-14 05:05:07,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:07,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:07,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:07,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 05:05:07,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:07,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:05:07,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:07,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:07,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:07,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:07,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:05:07,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:07,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:07,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:07,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:05:07,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:05:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:07,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:07,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:07,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:05:07,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:05:07,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:05:07,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:07,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:07,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:07,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:07,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:07,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:07,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:07,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:07,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:07,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:05:07,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:07,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:07,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:07,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:07,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:07,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:05:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:07,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:07,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:07,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:05:07,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:07,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 05:05:07,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:07,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:07,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:07,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:07,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:07,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:07,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:07,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:07,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:05:07,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:07,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:07,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:05:08,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965734626] [2020-10-14 05:05:08,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:05:08,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:05:08,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581667277] [2020-10-14 05:05:08,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:05:08,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:08,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:05:08,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:05:08,052 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-10-14 05:05:08,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:08,299 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2020-10-14 05:05:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:05:08,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-14 05:05:08,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:08,311 INFO L225 Difference]: With dead ends: 97 [2020-10-14 05:05:08,311 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 05:05:08,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:05:08,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 05:05:08,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-14 05:05:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 05:05:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-14 05:05:08,361 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 36 [2020-10-14 05:05:08,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:08,363 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-14 05:05:08,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:05:08,364 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-14 05:05:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 05:05:08,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:08,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:08,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:05:08,367 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:08,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:08,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1245592506, now seen corresponding path program 1 times [2020-10-14 05:05:08,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:08,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810221892] [2020-10-14 05:05:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:08,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:09,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:12,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:12,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 05:05:12,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:05:12,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4451 [2020-10-14 05:05:12,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:12,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:05:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:05:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:05:12,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:12,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:12,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:12,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:12,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:12,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:12,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:05:12,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:12,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:12,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:12,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:12,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:05:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:12,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:12,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:12,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:05:12,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:12,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 05:05:12,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:12,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:05:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:05:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:05:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:12,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:12,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:12,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:12,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:12,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:05:12,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:12,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:05:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:05:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:13,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:13,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:13,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:05:13,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 05:05:13,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:13,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:05:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:13,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:13,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:13,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:13,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:13,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:13,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:13,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:05:13,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:13,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:13,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:05:13,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810221892] [2020-10-14 05:05:13,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:05:13,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:05:13,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215010957] [2020-10-14 05:05:13,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:05:13,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:13,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:05:13,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:05:13,057 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 7 states. [2020-10-14 05:05:13,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:13,302 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-10-14 05:05:13,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:05:13,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-14 05:05:13,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:13,305 INFO L225 Difference]: With dead ends: 68 [2020-10-14 05:05:13,305 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 05:05:13,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:05:13,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 05:05:13,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-14 05:05:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 05:05:13,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-14 05:05:13,316 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2020-10-14 05:05:13,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:13,316 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-14 05:05:13,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:05:13,317 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-14 05:05:13,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:05:13,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:13,318 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:13,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:05:13,319 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:13,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:13,319 INFO L82 PathProgramCache]: Analyzing trace with hash -2128308850, now seen corresponding path program 1 times [2020-10-14 05:05:13,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:13,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596840253] [2020-10-14 05:05:13,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:13,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:17,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:17,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:05:17,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:17,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3767 [2020-10-14 05:05:17,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:17,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 05:05:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:05:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 05:05:17,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:17,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:17,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:17,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:17,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:17,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:17,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:17,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:17,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:17,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:17,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:05:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:17,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:17,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:05:17,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:17,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 05:05:17,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:17,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:05:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:05:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:17,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:17,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:17,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:17,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:17,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:17,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 05:05:17,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:17,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:05:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:05:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:17,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:05:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:17,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:17,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:17,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:17,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:17,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 05:05:17,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:17,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:05:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:17,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:05:17,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:17,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:05:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:17,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:18,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:18,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:05:18,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:18,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-14 05:05:18,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:18,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:05:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:05:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:05:18,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:18,824 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-10-14 05:05:18,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:18,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:19,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:19,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:19,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:19,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 05:05:19,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:19,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:05:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:05:19,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:05:19,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:05:19,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596840253] [2020-10-14 05:05:19,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:05:19,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 05:05:19,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819898918] [2020-10-14 05:05:19,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 05:05:19,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:19,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 05:05:19,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:05:19,245 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 26 states. [2020-10-14 05:05:20,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:20,355 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-10-14 05:05:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:05:20,355 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 46 [2020-10-14 05:05:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:20,358 INFO L225 Difference]: With dead ends: 45 [2020-10-14 05:05:20,358 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 05:05:20,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 05:05:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 05:05:20,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-14 05:05:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 05:05:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-14 05:05:20,368 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 46 [2020-10-14 05:05:20,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:20,369 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-14 05:05:20,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 05:05:20,369 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-14 05:05:20,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:05:20,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:20,370 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:20,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:05:20,371 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:20,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:20,371 INFO L82 PathProgramCache]: Analyzing trace with hash -2140293592, now seen corresponding path program 1 times [2020-10-14 05:05:20,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:20,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312116962] [2020-10-14 05:05:20,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:20,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:22,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:25,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:25,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 05:05:25,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:05:25,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-14 05:05:25,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:25,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:05:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:05:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 05:05:25,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:25,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:25,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:25,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:25,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:25,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:25,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:25,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:25,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:25,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:05:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:25,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:26,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:26,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 05:05:26,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:26,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-14 05:05:26,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:26,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:05:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:05:26,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:26,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:05:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:26,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:26,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:26,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:26,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:05:26,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:26,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:26,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:05:26,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:05:26,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:05:26,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 05:05:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:26,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:26,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:26,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:26,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:26,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:05:26,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:26,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:05:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:05:26,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:05:26,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:26,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:05:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:26,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:27,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:27,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:05:27,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:27,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-14 05:05:27,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:27,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:05:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:05:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:05:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1